diff --git a/app/assets/javascripts/design_management/components/design_notes/design_discussion.vue b/app/assets/javascripts/design_management/components/design_notes/design_discussion.vue
index ac00af2ab34..124780df8a5 100644
--- a/app/assets/javascripts/design_management/components/design_notes/design_discussion.vue
+++ b/app/assets/javascripts/design_management/components/design_notes/design_discussion.vue
@@ -174,6 +174,7 @@ export default {
       this.$emit('open-form', this.discussion.id);
       this.isFormRendered = true;
     },
+
     toggleResolvedStatus() {
       this.isResolving = true;
 
@@ -234,6 +235,7 @@ export default {
         :note="firstNote"
         :markdown-preview-path="markdownPreviewPath"
         :is-resolving="isResolving"
+        :noteable-id="noteableId"
         :class="{ 'gl-bg-blue-50': isDiscussionActive }"
         @error="$emit('update-note-error', $event)"
       >
@@ -276,6 +278,7 @@ export default {
         :note="note"
         :markdown-preview-path="markdownPreviewPath"
         :is-resolving="isResolving"
+        :noteable-id="noteableId"
         :class="{ 'gl-bg-blue-50': isDiscussionActive }"
         @error="$emit('update-note-error', $event)"
       />
@@ -307,6 +310,8 @@ export default {
               v-model="discussionComment"
               :is-saving="loading"
               :markdown-preview-path="markdownPreviewPath"
+              :noteable-id="noteableId"
+              :discussion-id="discussion.id"
               @submit-form="mutate"
               @cancel-form="hideForm"
             >
diff --git a/app/assets/javascripts/design_management/components/design_notes/design_note.vue b/app/assets/javascripts/design_management/components/design_notes/design_note.vue
index 5fb5989e11a..e629f74ba02 100644
--- a/app/assets/javascripts/design_management/components/design_notes/design_note.vue
+++ b/app/assets/javascripts/design_management/components/design_notes/design_note.vue
@@ -45,6 +45,10 @@ export default {
       required: false,
       default: '',
     },
+    noteableId: {
+      type: String,
+      required: true,
+    },
   },
   data() {
     return {
@@ -160,6 +164,7 @@ export default {
         :is-saving="loading"
         :markdown-preview-path="markdownPreviewPath"
         :is-new-comment="false"
+        :noteable-id="noteableId"
         class="gl-mt-5"
         @submit-form="mutate"
         @cancel-form="hideForm"
diff --git a/app/assets/javascripts/design_management/components/design_notes/design_reply_form.vue b/app/assets/javascripts/design_management/components/design_notes/design_reply_form.vue
index 1b6458668f5..4faeba3983b 100644
--- a/app/assets/javascripts/design_management/components/design_notes/design_reply_form.vue
+++ b/app/assets/javascripts/design_management/components/design_notes/design_reply_form.vue
@@ -1,7 +1,11 @@
 <script>
 import { GlButton, GlModal } from '@gitlab/ui';
+import $ from 'jquery';
 import { helpPagePath } from '~/helpers/help_page_helper';
 import { s__ } from '~/locale';
+import Autosave from '~/autosave';
+import { isLoggedIn } from '~/lib/utils/common_utils';
+import { getIdFromGraphQLId, isGid } from '~/graphql_shared/utils';
 import MarkdownField from '~/vue_shared/components/markdown/field.vue';
 
 export default {
@@ -30,10 +34,20 @@ export default {
       required: false,
       default: true,
     },
+    noteableId: {
+      type: String,
+      required: true,
+    },
+    discussionId: {
+      type: String,
+      required: false,
+      default: 'new',
+    },
   },
   data() {
     return {
       formText: this.value,
+      isLoggedIn: isLoggedIn(),
     };
   },
   computed: {
@@ -64,13 +78,19 @@ export default {
     markdownDocsPath() {
       return helpPagePath('user/markdown');
     },
+    shortDiscussionId() {
+      return isGid(this.discussionId) ? getIdFromGraphQLId(this.discussionId) : this.discussionId;
+    },
   },
   mounted() {
     this.focusInput();
   },
   methods: {
     submitForm() {
-      if (this.hasValue) this.$emit('submit-form');
+      if (this.hasValue) {
+        this.$emit('submit-form');
+        this.autosaveDiscussion.reset();
+      }
     },
     cancelComment() {
       if (this.hasValue && this.formText !== this.value) {
@@ -79,8 +99,22 @@ export default {
         this.$emit('cancel-form');
       }
     },
+    confirmCancelCommentModal() {
+      this.$emit('cancel-form');
+      this.autosaveDiscussion.reset();
+    },
     focusInput() {
       this.$refs.textarea.focus();
+      this.initAutosaveComment();
+    },
+    initAutosaveComment() {
+      if (this.isLoggedIn) {
+        this.autosaveDiscussion = new Autosave($(this.$refs.textarea), [
+          s__('DesignManagement|Discussion'),
+          getIdFromGraphQLId(this.noteableId),
+          this.shortDiscussionId,
+        ]);
+      }
     },
   },
 };
@@ -124,7 +158,7 @@ export default {
         type="submit"
         data-track-action="click_button"
         data-qa-selector="save_comment_button"
-        @click="$emit('submit-form')"
+        @click="submitForm"
       >
         {{ buttonText }}
       </gl-button>
@@ -144,7 +178,7 @@ export default {
       :ok-title="modalSettings.okTitle"
       :cancel-title="modalSettings.cancelTitle"
       modal-id="cancel-comment-modal"
-      @ok="$emit('cancel-form')"
+      @ok="confirmCancelCommentModal"
       >{{ modalSettings.content }}
     </gl-modal>
   </form>
diff --git a/app/assets/javascripts/design_management/pages/design/index.vue b/app/assets/javascripts/design_management/pages/design/index.vue
index 1825ce7f092..228ad637b9e 100644
--- a/app/assets/javascripts/design_management/pages/design/index.vue
+++ b/app/assets/javascripts/design_management/pages/design/index.vue
@@ -418,6 +418,7 @@ export default {
             v-model="comment"
             :is-saving="loading"
             :markdown-preview-path="markdownPreviewPath"
+            :noteable-id="design.id"
             @submit-form="mutate"
             @cancel-form="closeCommentForm"
           /> </apollo-mutation
diff --git a/app/assets/javascripts/jobs/components/table/graphql/queries/get_jobs.query.graphql b/app/assets/javascripts/jobs/components/table/graphql/queries/get_jobs.query.graphql
index 75e1daaafbf..98b51e8c2c4 100644
--- a/app/assets/javascripts/jobs/components/table/graphql/queries/get_jobs.query.graphql
+++ b/app/assets/javascripts/jobs/components/table/graphql/queries/get_jobs.query.graphql
@@ -12,7 +12,6 @@ query getJobs($fullPath: ID!, $after: String, $first: Int = 30, $statuses: [CiJo
       nodes {
         artifacts {
           nodes {
-            id
             downloadPath
             fileType
           }
diff --git a/app/assets/javascripts/pages/projects/settings/merge_requests/index.js b/app/assets/javascripts/pages/projects/settings/merge_requests/index.js
new file mode 100644
index 00000000000..739e666644c
--- /dev/null
+++ b/app/assets/javascripts/pages/projects/settings/merge_requests/index.js
@@ -0,0 +1,10 @@
+import groupsSelect from '~/groups_select';
+import UserCallout from '~/user_callout';
+import UsersSelect from '~/users_select';
+
+// eslint-disable-next-line no-new
+new UsersSelect();
+groupsSelect();
+
+// eslint-disable-next-line no-new
+new UserCallout({ className: 'js-mr-approval-callout' });
diff --git a/app/assets/javascripts/persistent_user_callouts.js b/app/assets/javascripts/persistent_user_callouts.js
index 04f0caa1ca3..a2b9a3bf889 100644
--- a/app/assets/javascripts/persistent_user_callouts.js
+++ b/app/assets/javascripts/persistent_user_callouts.js
@@ -18,6 +18,7 @@ const PERSISTENT_USER_CALLOUTS = [
   '.js-project-usage-limitations-callout',
   '.js-namespace-storage-alert',
   '.js-web-hook-disabled-callout',
+  '.js-merge-request-settings-callout',
 ];
 
 const initCallouts = () => {
diff --git a/app/assets/javascripts/pipelines/graphql/queries/get_pipeline_jobs.query.graphql b/app/assets/javascripts/pipelines/graphql/queries/get_pipeline_jobs.query.graphql
index 0ed8f596d3d..641ec7a3cf6 100644
--- a/app/assets/javascripts/pipelines/graphql/queries/get_pipeline_jobs.query.graphql
+++ b/app/assets/javascripts/pipelines/graphql/queries/get_pipeline_jobs.query.graphql
@@ -12,7 +12,6 @@ query getPipelineJobs($fullPath: ID!, $iid: ID!, $after: String) {
         nodes {
           artifacts {
             nodes {
-              id
               downloadPath
               fileType
             }
diff --git a/app/assets/javascripts/vue_shared/security_reports/graphql/fragments/job_artifacts.fragment.graphql b/app/assets/javascripts/vue_shared/security_reports/graphql/fragments/job_artifacts.fragment.graphql
index 981d01cc81a..829b9d9f9d8 100644
--- a/app/assets/javascripts/vue_shared/security_reports/graphql/fragments/job_artifacts.fragment.graphql
+++ b/app/assets/javascripts/vue_shared/security_reports/graphql/fragments/job_artifacts.fragment.graphql
@@ -6,7 +6,6 @@ fragment JobArtifacts on Pipeline {
       name
       artifacts {
         nodes {
-          id
           downloadPath
           fileType
         }
diff --git a/app/assets/javascripts/vue_shared/security_reports/graphql/queries/security_report_merge_request_download_paths.query.graphql b/app/assets/javascripts/vue_shared/security_reports/graphql/queries/security_report_merge_request_download_paths.query.graphql
index 9c5090cfc28..2e80db30e9a 100644
--- a/app/assets/javascripts/vue_shared/security_reports/graphql/queries/security_report_merge_request_download_paths.query.graphql
+++ b/app/assets/javascripts/vue_shared/security_reports/graphql/queries/security_report_merge_request_download_paths.query.graphql
@@ -15,7 +15,6 @@ query securityReportDownloadPaths(
             name
             artifacts {
               nodes {
-                id
                 downloadPath
                 fileType
               }
diff --git a/app/assets/stylesheets/framework/highlight.scss b/app/assets/stylesheets/framework/highlight.scss
index ab426f388c6..a63ce66e681 100644
--- a/app/assets/stylesheets/framework/highlight.scss
+++ b/app/assets/stylesheets/framework/highlight.scss
@@ -31,8 +31,7 @@
         width: 100%;
         padding-left: 10px;
         padding-right: 10px;
-        white-space: break-spaces;
-        word-break: break-word;
+        white-space: pre;
 
         &:empty::before {
           content: '\200b';
diff --git a/app/assets/stylesheets/pages/search.scss b/app/assets/stylesheets/pages/search.scss
index 6c909b8d9fa..f65c45d6d89 100644
--- a/app/assets/stylesheets/pages/search.scss
+++ b/app/assets/stylesheets/pages/search.scss
@@ -383,6 +383,10 @@ input[type='checkbox']:hover {
   .line_holder {
     pre {
       padding: 0; // This overrides the existing style that will add space between each line.
+      .line {
+        @include gl-word-break-word;
+        white-space: break-spaces;
+      }
     }
 
     svg {
diff --git a/app/controllers/projects/settings/merge_requests_controller.rb b/app/controllers/projects/settings/merge_requests_controller.rb
new file mode 100644
index 00000000000..93e10695767
--- /dev/null
+++ b/app/controllers/projects/settings/merge_requests_controller.rb
@@ -0,0 +1,67 @@
+# frozen_string_literal: true
+
+module Projects
+  module Settings
+    class MergeRequestsController < Projects::ApplicationController
+      layout 'project_settings'
+
+      before_action :merge_requests_enabled?
+      before_action :present_project, only: [:edit]
+      before_action :authorize_admin_project!
+
+      feature_category :code_review
+
+      def update
+        result = ::Projects::UpdateService.new(@project, current_user, project_params).execute
+
+        if result[:status] == :success
+          flash[:notice] = format(_("Project '%{project_name}' was successfully updated."), project_name: @project.name)
+          redirect_to project_settings_merge_requests_path(@project)
+        else
+          # Refresh the repo in case anything changed
+          @repository = @project.repository.reset
+
+          flash[:alert] = result[:message]
+          @project.reset
+          render 'show'
+        end
+      end
+
+      private
+
+      def merge_requests_enabled?
+        render_404 unless @project.merge_requests_enabled?
+      end
+
+      def project_params
+        params.require(:project)
+          .permit(project_params_attributes)
+      end
+
+      def project_setting_attributes
+        %i[
+          squash_option
+          allow_editing_commit_messages
+          mr_default_target_self
+        ]
+      end
+
+      def project_params_attributes
+        [
+          :allow_merge_on_skipped_pipeline,
+          :resolve_outdated_diff_discussions,
+          :only_allow_merge_if_all_discussions_are_resolved,
+          :only_allow_merge_if_pipeline_succeeds,
+          :printing_merge_request_link_enabled,
+          :remove_source_branch_after_merge,
+          :merge_method,
+          :merge_commit_template_or_default,
+          :squash_commit_template_or_default,
+          :suggestion_commit_message
+        ] + [project_setting_attributes: project_setting_attributes]
+      end
+    end
+  end
+end
+
+Projects::Settings::MergeRequestsController.prepend_mod_with('Projects::Settings::MergeRequestsController')
diff --git a/app/graphql/types/ci/job_artifact_type.rb b/app/graphql/types/ci/job_artifact_type.rb
index 6346d50de3a..a6ab445702c 100644
--- a/app/graphql/types/ci/job_artifact_type.rb
+++ b/app/graphql/types/ci/job_artifact_type.rb
@@ -6,9 +6,6 @@ module Types
     class JobArtifactType < BaseObject
       graphql_name 'CiJobArtifact'
 
-      field :id, Types::GlobalIDType[::Ci::JobArtifact], null: false,
-                                                         description: 'ID of the artifact.'
-
       field :download_path, GraphQL::Types::String, null: true,
                                                     description: "URL for downloading the artifact's file."
 
@@ -19,12 +16,6 @@ module Types
                                            description: 'File name of the artifact.',
                                            method: :filename
 
-      field :size, GraphQL::Types::Int, null: false,
-                                        description: 'Size of the artifact in bytes.'
-
-      field :expire_at, Types::TimeType, null: true,
-                                         description: 'Expiry date of the artifact.'
-
       def download_path
         ::Gitlab::Routing.url_helpers.download_project_job_artifacts_path(
           object.project,
diff --git a/app/helpers/users/callouts_helper.rb b/app/helpers/users/callouts_helper.rb
index b08de4edb62..a2c3aa649e6 100644
--- a/app/helpers/users/callouts_helper.rb
+++ b/app/helpers/users/callouts_helper.rb
@@ -10,6 +10,7 @@ module Users
     REGISTRATION_ENABLED_CALLOUT = 'registration_enabled_callout'
     UNFINISHED_TAG_CLEANUP_CALLOUT = 'unfinished_tag_cleanup_callout'
     SECURITY_NEWSLETTER_CALLOUT = 'security_newsletter_callout'
+    MERGE_REQUEST_SETTINGS_MOVED_CALLOUT = 'merge_request_settings_moved_callout'
     REGISTRATION_ENABLED_CALLOUT_ALLOWED_CONTROLLER_PATHS = [/^root/, /^dashboard\S*/, /^admin\S*/].freeze
     WEB_HOOK_DISABLED = 'web_hook_disabled'
 
@@ -74,6 +75,10 @@ module Users
       user_dismissed?(WEB_HOOK_DISABLED, last_failure, project: project)
     end
 
+    def show_merge_request_settings_callout?
+      !user_dismissed?(MERGE_REQUEST_SETTINGS_MOVED_CALLOUT)
+    end
+
     private
 
     def user_dismissed?(feature_name, ignore_dismissal_earlier_than = nil, project: nil)
diff --git a/app/models/users/callout.rb b/app/models/users/callout.rb
index c9b6b859d45..03841ee48fa 100644
--- a/app/models/users/callout.rb
+++ b/app/models/users/callout.rb
@@ -60,7 +60,8 @@ module Users
       namespace_storage_limit_banner_warning_threshold: 56, # EE-only
       namespace_storage_limit_banner_alert_threshold: 57, # EE-only
       namespace_storage_limit_banner_error_threshold: 58, # EE-only
-      project_quality_summary_feedback: 59       # EE-only
+      project_quality_summary_feedback: 59,       # EE-only
+      merge_request_settings_moved_callout: 60
     }
 
     validates :feature_name,
diff --git a/app/services/users/migrate_records_to_ghost_user_service.rb b/app/services/users/migrate_records_to_ghost_user_service.rb
new file mode 100644
index 00000000000..6e2f478ea72
--- /dev/null
+++ b/app/services/users/migrate_records_to_ghost_user_service.rb
@@ -0,0 +1,107 @@
+# frozen_string_literal: true
+
+# When a user is destroyed, some of their associated records are
+# moved to a "Ghost User", to prevent these associated records from
+# being destroyed.
+#
+# For example, all the issues/MRs a user has created are _not_ destroyed
+# when the user is destroyed.
+module Users
+  class MigrateRecordsToGhostUserService
+    extend ActiveSupport::Concern
+
+    DestroyError = Class.new(StandardError)
+
+    attr_reader :ghost_user, :user, :initiator_user, :hard_delete
+
+    def initialize(user, initiator_user)
+      @user = user
+      @initiator_user = initiator_user
+      @ghost_user = User.ghost
+    end
+
+    def execute(hard_delete: false)
+      @hard_delete = hard_delete
+
+      migrate_records
+      post_migrate_records
+    end
+
+    private
+
+    def migrate_records
+      return if hard_delete
+
+      migrate_issues
+      migrate_merge_requests
+      migrate_notes
+      migrate_abuse_reports
+      migrate_award_emoji
+      migrate_snippets
+      migrate_reviews
+    end
+
+    def post_migrate_records
+      delete_snippets
+
+      # Rails attempts to load all related records into memory before
+      # destroying: https://github.com/rails/rails/issues/22510
+      # This ensures we delete records in batches.
+      user.destroy_dependent_associations_in_batches(exclude: [:snippets])
+      user.nullify_dependent_associations_in_batches
+
+      # Destroy the namespace after destroying the user since certain methods may depend on the namespace existing
+      user_data = user.destroy
+      user.namespace.destroy
+
+      user_data
+    end
+
+    def delete_snippets
+      response = Snippets::BulkDestroyService.new(initiator_user, user.snippets).execute(skip_authorization: true)
+      raise DestroyError, response.message if response.error?
+    end
+
+    def migrate_issues
+      batched_migrate(Issue, :author_id)
+      batched_migrate(Issue, :last_edited_by_id)
+    end
+
+    def migrate_merge_requests
+      batched_migrate(MergeRequest, :author_id)
+      batched_migrate(MergeRequest, :merge_user_id)
+    end
+
+    def migrate_notes
+      batched_migrate(Note, :author_id)
+    end
+
+    def migrate_abuse_reports
+      user.reported_abuse_reports.update_all(reporter_id: ghost_user.id)
+    end
+
+    def migrate_award_emoji
+      user.award_emoji.update_all(user_id: ghost_user.id)
+    end
+
+    def migrate_snippets
+      snippets = user.snippets.only_project_snippets
+      snippets.update_all(author_id: ghost_user.id)
+    end
+
+    def migrate_reviews
+      batched_migrate(Review, :author_id)
+    end
+
+    # rubocop:disable CodeReuse/ActiveRecord
+    def batched_migrate(base_scope, column, batch_size: 50)
+      loop do
+        update_count = base_scope.where(column => user.id).limit(batch_size).update_all(column => ghost_user.id)
+        break if update_count == 0
+      end
+    end
+    # rubocop:enable CodeReuse/ActiveRecord
+  end
+end
+
+Users::MigrateRecordsToGhostUserService.prepend_mod_with('Users::MigrateRecordsToGhostUserService')
diff --git a/app/views/projects/edit.html.haml b/app/views/projects/edit.html.haml
index a7dd69a9607..fda17284f83 100644
--- a/app/views/projects/edit.html.haml
+++ b/app/views/projects/edit.html.haml
@@ -26,23 +26,13 @@
       %template.js-project-permissions-form-data{ type: "application/json" }= project_permissions_panel_data(@project).to_json.html_safe
       .js-project-permissions-form{ data: visibility_confirm_modal_data(@project, reduce_visibility_form_id) }
 
-%section.rspec-merge-request-settings.settings.merge-requests-feature.no-animate#js-merge-request-settings{ class: [('expanded' if expanded), ('hidden' if @project.project_feature.send(:merge_requests_access_level) == 0)], data: { qa_selector: 'merge_request_settings_content' } }
-  .settings-header
-    %h4.settings-title.js-settings-toggle.js-settings-toggle-trigger-only= _('Merge requests')
-    = render Pajamas::ButtonComponent.new(button_options: { class: 'js-settings-toggle' }) do
-      = expanded ? _('Collapse') : _('Expand')
-    = render_if_exists 'projects/merge_request_settings_description_text'
-
-  .settings-content
-    = render_if_exists 'shared/promotions/promote_mr_features'
-
-    = gitlab_ui_form_for @project, html: { multipart: true, class: "merge-request-settings-form js-mr-settings-form" }, authenticity_token: true do |f|
-      %input{ name: 'update_section', type: 'hidden', value: 'js-merge-request-settings' }
-      = render 'projects/merge_request_settings', form: f
-      = f.submit _('Save changes'), class: "btn gl-button btn-confirm rspec-save-merge-request-changes", data: { qa_selector: 'save_merge_request_changes_button' }
-
-= render_if_exists 'projects/merge_request_approvals_settings', expanded: expanded
-
+- if show_merge_request_settings_callout?
+  %section.settings.expanded
+    = render Pajamas::AlertComponent.new(variant: :info,
+        title: _('Merge requests and approvals settings have moved.'),
+        alert_options: { class: 'js-merge-request-settings-callout gl-my-5', data: { feature_id: Users::CalloutsHelper::MERGE_REQUEST_SETTINGS_MOVED_CALLOUT, dismiss_endpoint: callouts_path, defer_links: 'true' } }) do |c|
+      = c.body do
+        = _('On the left sidebar, select %{merge_requests_link} to view them.').html_safe % { merge_requests_link: link_to('Settings > Merge requests', project_settings_merge_requests_path(@project)).html_safe }
 
 %section.settings.no-animate{ class: ('expanded' if expanded), data: { qa_selector: 'badges_settings_content' } }
   .settings-header
diff --git a/app/views/projects/settings/merge_requests/show.html.haml b/app/views/projects/settings/merge_requests/show.html.haml
new file mode 100644
index 00000000000..886e276dea5
--- /dev/null
+++ b/app/views/projects/settings/merge_requests/show.html.haml
@@ -0,0 +1,18 @@
+- breadcrumb_title _('Merge requests')
+- page_title _('Merge requests')
+- @content_class = 'limit-container-width' unless fluid_layout
+
+%section.rspec-merge-request-settings.settings.merge-requests-feature.no-animate#js-merge-request-settings.expanded{ class: [('hidden' if @project.project_feature.send(:merge_requests_access_level) == 0)], data: { qa_selector: 'merge_request_settings_content' } }
+  .settings-header
+    %h4.settings-title.js-settings-toggle.js-settings-toggle-trigger-only= _('Merge requests')
+    = render_if_exists 'projects/merge_request_settings_description_text'
+
+  .settings-content
+    = render_if_exists 'shared/promotions/promote_mr_features'
+
+    = gitlab_ui_form_for @project, url: project_settings_merge_requests_path(@project), html: { multipart: true, class: "merge-request-settings-form js-mr-settings-form" }, authenticity_token: true do |f|
+      %input{ name: 'update_section', type: 'hidden', value: 'js-merge-request-settings' }
+      = render 'projects/merge_request_settings', form: f
+      = f.submit _('Save changes'), class: "btn gl-button btn-confirm rspec-save-merge-request-changes", data: { qa_selector: 'save_merge_request_changes_button' }
+
+= render_if_exists 'projects/settings/merge_requests/merge_request_approvals_settings', expanded: true
diff --git a/config/routes/project.rb b/config/routes/project.rb
index e1ee0c8f28b..79ca13e3d8c 100644
--- a/config/routes/project.rb
+++ b/config/routes/project.rb
@@ -159,6 +159,7 @@ constraints(::Constraints::ProjectUrlConstrainer.new) do
           resource :packages_and_registries, only: [:show] do
             get '/cleanup_image_tags', to: 'packages_and_registries#cleanup_tags'
           end
+          resource :merge_requests, only: [:show, :update]
         end
 
         resources :usage_quotas, only: [:index]
diff --git a/doc/api/graphql/reference/index.md b/doc/api/graphql/reference/index.md
index f1ed7c5fc04..87900d1451b 100644
--- a/doc/api/graphql/reference/index.md
+++ b/doc/api/graphql/reference/index.md
@@ -10267,11 +10267,8 @@ CI/CD variables for a GitLab instance.
 | Name | Type | Description |
 | ---- | ---- | ----------- |
 | <a id="cijobartifactdownloadpath"></a>`downloadPath` | [`String`](#string) | URL for downloading the artifact's file. |
-| <a id="cijobartifactexpireat"></a>`expireAt` | [`Time`](#time) | Expiry date of the artifact. |
 | <a id="cijobartifactfiletype"></a>`fileType` | [`JobArtifactFileType`](#jobartifactfiletype) | File type of the artifact. |
-| <a id="cijobartifactid"></a>`id` | [`CiJobArtifactID!`](#cijobartifactid) | ID of the artifact. |
 | <a id="cijobartifactname"></a>`name` | [`String`](#string) | File name of the artifact. |
-| <a id="cijobartifactsize"></a>`size` | [`Int!`](#int) | Size of the artifact in bytes. |
 
 ### `CiJobTokenScopeType`
 
@@ -20962,6 +20959,7 @@ Name of the feature that the callout is for.
 | <a id="usercalloutfeaturenameenumgeo_migrate_hashed_storage"></a>`GEO_MIGRATE_HASHED_STORAGE` | Callout feature name for geo_migrate_hashed_storage. |
 | <a id="usercalloutfeaturenameenumgke_cluster_integration"></a>`GKE_CLUSTER_INTEGRATION` | Callout feature name for gke_cluster_integration. |
 | <a id="usercalloutfeaturenameenumgold_trial_billings"></a>`GOLD_TRIAL_BILLINGS` | Callout feature name for gold_trial_billings. |
+| <a id="usercalloutfeaturenameenummerge_request_settings_moved_callout"></a>`MERGE_REQUEST_SETTINGS_MOVED_CALLOUT` | Callout feature name for merge_request_settings_moved_callout. |
 | <a id="usercalloutfeaturenameenummr_experience_survey"></a>`MR_EXPERIENCE_SURVEY` | Callout feature name for mr_experience_survey. |
 | <a id="usercalloutfeaturenameenumnamespace_storage_limit_banner_alert_threshold"></a>`NAMESPACE_STORAGE_LIMIT_BANNER_ALERT_THRESHOLD` | Callout feature name for namespace_storage_limit_banner_alert_threshold. |
 | <a id="usercalloutfeaturenameenumnamespace_storage_limit_banner_error_threshold"></a>`NAMESPACE_STORAGE_LIMIT_BANNER_ERROR_THRESHOLD` | Callout feature name for namespace_storage_limit_banner_error_threshold. |
@@ -21288,12 +21286,6 @@ A `CiBuildID` is a global ID. It is encoded as a string.
 
 An example `CiBuildID` is: `"gid://gitlab/Ci::Build/1"`.
 
-### `CiJobArtifactID`
-
-A `CiJobArtifactID` is a global ID. It is encoded as a string.
-
-An example `CiJobArtifactID` is: `"gid://gitlab/Ci::JobArtifact/1"`.
-
 ### `CiPipelineID`
 
 A `CiPipelineID` is a global ID. It is encoded as a string.
diff --git a/doc/user/discussions/img/create-new-issue_v15.png b/doc/user/discussions/img/create-new-issue_v15.png
deleted file mode 100644
index 779196b6ba4..00000000000
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diff --git a/doc/user/discussions/img/create_new_issue_v15_4.png b/doc/user/discussions/img/create_new_issue_v15_4.png
new file mode 100644
index 00000000000..3720b601cc5
Binary files /dev/null and b/doc/user/discussions/img/create_new_issue_v15_4.png differ
diff --git a/doc/user/discussions/img/unresolved_threads_v15.png b/doc/user/discussions/img/unresolved_threads_v15.png
deleted file mode 100644
index 113af20effc..00000000000
Binary files a/doc/user/discussions/img/unresolved_threads_v15.png and /dev/null differ
diff --git a/doc/user/discussions/img/unresolved_threads_v15_4.png b/doc/user/discussions/img/unresolved_threads_v15_4.png
new file mode 100644
index 00000000000..1d1669de0f1
Binary files /dev/null and b/doc/user/discussions/img/unresolved_threads_v15_4.png differ
diff --git a/doc/user/discussions/index.md b/doc/user/discussions/index.md
index 3fb0be6480c..7540ae8450f 100644
--- a/doc/user/discussions/index.md
+++ b/doc/user/discussions/index.md
@@ -309,15 +309,15 @@ To resolve a thread:
 
 At the top of the page, the number of unresolved threads is updated:
 
-![Count of unresolved threads](img/unresolved_threads_v15.png)
+![Count of unresolved threads](img/unresolved_threads_v15_4.png)
 
 ### Move all unresolved threads in a merge request to an issue
 
 If you have multiple unresolved threads in a merge request, you can
 create an issue to resolve them separately. In the merge request, at the top of the page,
-select **Create issue to resolve all threads** (**{issue-new}**):
+click the ellipsis icon button (**{ellipsis_v}**) in the threads control and then select **Create issue to resolve all threads**:
 
-![Open new issue for all unresolved threads](img/create-new-issue_v15.png)
+![Open new issue for all unresolved threads](img/create_new_issue_v15_4.png)
 
 All threads are marked as resolved, and a link is added from the merge request to
 the newly created issue.
diff --git a/lib/sidebars/projects/menus/merge_requests_menu.rb b/lib/sidebars/projects/menus/merge_requests_menu.rb
index fe501667d37..3e543872d36 100644
--- a/lib/sidebars/projects/menus/merge_requests_menu.rb
+++ b/lib/sidebars/projects/menus/merge_requests_menu.rb
@@ -59,9 +59,9 @@ module Sidebars
         override :active_routes
         def active_routes
           if context.project.issues_enabled?
-            { controller: :merge_requests }
+            { controller: 'projects/merge_requests' }
           else
-            { controller: [:merge_requests, :milestones] }
+            { controller: ['projects/merge_requests', :milestones] }
           end
         end
       end
diff --git a/lib/sidebars/projects/menus/settings_menu.rb b/lib/sidebars/projects/menus/settings_menu.rb
index 23be751ff10..f422d56ce4f 100644
--- a/lib/sidebars/projects/menus/settings_menu.rb
+++ b/lib/sidebars/projects/menus/settings_menu.rb
@@ -13,6 +13,7 @@ module Sidebars
           add_item(webhooks_menu_item)
           add_item(access_tokens_menu_item)
           add_item(repository_menu_item)
+          add_item(merge_requests_menu_item)
           add_item(ci_cd_menu_item)
           add_item(packages_and_registries_menu_item)
           add_item(pages_menu_item)
@@ -150,6 +151,17 @@ module Sidebars
             item_id: :usage_quotas
           )
         end
+
+        def merge_requests_menu_item
+          return unless context.project.merge_requests_enabled?
+
+          ::Sidebars::MenuItem.new(
+            title: _('Merge requests'),
+            link: project_settings_merge_requests_path(context.project),
+            active_routes: { path: 'projects/settings/merge_requests#show' },
+            item_id: :merge_requests
+          )
+        end
       end
     end
   end
diff --git a/locale/gitlab.pot b/locale/gitlab.pot
index 856076adfb3..7d88c32e472 100644
--- a/locale/gitlab.pot
+++ b/locale/gitlab.pot
@@ -13345,6 +13345,9 @@ msgstr ""
 msgid "DesignManagement|Discard comment"
 msgstr ""
 
+msgid "DesignManagement|Discussion"
+msgstr ""
+
 msgid "DesignManagement|Download design"
 msgstr ""
 
@@ -24759,6 +24762,9 @@ msgstr ""
 msgid "Merge requests"
 msgstr ""
 
+msgid "Merge requests and approvals settings have moved."
+msgstr ""
+
 msgid "Merge requests are a place to propose changes you've made to a project and discuss those changes with others"
 msgstr ""
 
@@ -27029,6 +27035,9 @@ msgid_plural "On %{end_date}, your trial will end and %{namespace_name} will be
 msgstr[0] ""
 msgstr[1] ""
 
+msgid "On the left sidebar, select %{merge_requests_link} to view them."
+msgstr ""
+
 msgid "On track"
 msgstr ""
 
diff --git a/qa/qa/flow/merge_request.rb b/qa/qa/flow/merge_request.rb
index cd8bac69fed..24abfa9e356 100644
--- a/qa/qa/flow/merge_request.rb
+++ b/qa/qa/flow/merge_request.rb
@@ -6,8 +6,7 @@ module QA
       extend self
 
       def enable_merge_trains
-        Page::Project::Menu.perform(&:go_to_general_settings)
-        Page::Project::Settings::Main.perform(&:expand_merge_requests_settings)
+        Page::Project::Menu.perform(&:go_to_merge_request_settings)
         Page::Project::Settings::MergeRequest.perform(&:enable_merge_train)
       end
 
diff --git a/qa/qa/page/project/settings/main.rb b/qa/qa/page/project/settings/main.rb
index 52ed630ac66..ca5d13abdae 100644
--- a/qa/qa/page/project/settings/main.rb
+++ b/qa/qa/page/project/settings/main.rb
@@ -13,11 +13,14 @@ module QA
 
           view 'app/views/projects/edit.html.haml' do
             element :advanced_settings_content
-            element :merge_request_settings_content
             element :visibility_features_permissions_content
             element :badges_settings_content
           end
 
+          view 'app/views/projects/settings/merge_requests/show.html.haml' do
+            element :merge_request_settings_content
+          end
+
           view 'app/views/projects/settings/_general.html.haml' do
             element :project_name_field
             element :save_naming_topics_avatar_button
@@ -42,12 +45,6 @@ module QA
             end
           end
 
-          def expand_merge_requests_settings(&block)
-            expand_content(:merge_request_settings_content) do
-              MergeRequest.perform(&block)
-            end
-          end
-
           def expand_visibility_project_features_permissions(&block)
             expand_content(:visibility_features_permissions_content) do
               VisibilityFeaturesPermissions.perform(&block)
diff --git a/qa/qa/page/project/settings/merge_request.rb b/qa/qa/page/project/settings/merge_request.rb
index dd9c94ebbb7..d862979aeec 100644
--- a/qa/qa/page/project/settings/merge_request.rb
+++ b/qa/qa/page/project/settings/merge_request.rb
@@ -7,7 +7,7 @@ module QA
         class MergeRequest < QA::Page::Base
           include QA::Page::Settings::Common
 
-          view 'app/views/projects/edit.html.haml' do
+          view 'app/views/projects/settings/merge_requests/show.html.haml' do
             element :save_merge_request_changes_button
           end
 
diff --git a/qa/qa/page/project/sub_menus/settings.rb b/qa/qa/page/project/sub_menus/settings.rb
index 53a5eaf60c5..2ed4c28afb7 100644
--- a/qa/qa/page/project/sub_menus/settings.rb
+++ b/qa/qa/page/project/sub_menus/settings.rb
@@ -77,6 +77,14 @@ module QA
             end
           end
 
+          def go_to_merge_request_settings
+            hover_settings do
+              within_submenu do
+                click_element(:sidebar_menu_item_link, menu_item: 'Merge requests')
+              end
+            end
+          end
+
           private
 
           def hover_settings
diff --git a/qa/qa/specs/features/browser_ui/3_create/merge_request/rebase_merge_request_spec.rb b/qa/qa/specs/features/browser_ui/3_create/merge_request/rebase_merge_request_spec.rb
index 2280cc971a7..c7296b6eea2 100644
--- a/qa/qa/specs/features/browser_ui/3_create/merge_request/rebase_merge_request_spec.rb
+++ b/qa/qa/specs/features/browser_ui/3_create/merge_request/rebase_merge_request_spec.rb
@@ -12,11 +12,9 @@ module QA
       it 'user rebases source branch of merge request', testcase: 'https://gitlab.com/gitlab-org/gitlab/-/quality/test_cases/347735' do
         merge_request.project.visit!
 
-        Page::Project::Menu.perform(&:go_to_general_settings)
-        Page::Project::Settings::Main.perform do |main|
-          main.expand_merge_requests_settings do |settings|
-            settings.enable_ff_only
-          end
+        Page::Project::Menu.perform(&:go_to_merge_request_settings)
+        Page::Project::Settings::MergeRequest.perform do |settings|
+          settings.enable_ff_only
         end
 
         Resource::Repository::ProjectPush.fabricate! do |push|
diff --git a/qa/qa/specs/features/shared_examples/merge_with_code_owner_shared_examples.rb b/qa/qa/specs/features/shared_examples/merge_with_code_owner_shared_examples.rb
index 4bbad9bf3e5..01b229192cc 100644
--- a/qa/qa/specs/features/shared_examples/merge_with_code_owner_shared_examples.rb
+++ b/qa/qa/specs/features/shared_examples/merge_with_code_owner_shared_examples.rb
@@ -8,11 +8,9 @@ module QA
       # Require one approval from any eligible user on any branch
       # This will confirm that this type of unrestricted approval is
       # also satisfied when a code owner grants approval
-      Page::Project::Menu.perform(&:go_to_general_settings)
-      Page::Project::Settings::Main.perform do |main|
-        main.expand_merge_request_approvals_settings do |settings|
-          settings.set_default_number_of_approvals_required(1)
-        end
+      Page::Project::Menu.perform(&:go_to_merge_request_settings)
+      Page::Project::Settings::MergeRequest.perform do |settings|
+        settings.set_default_number_of_approvals_required(1)
       end
 
       Resource::Repository::Commit.fabricate_via_api! do |commit|
diff --git a/spec/controllers/projects/settings/merge_requests_controller_spec.rb b/spec/controllers/projects/settings/merge_requests_controller_spec.rb
new file mode 100644
index 00000000000..106ec62bea0
--- /dev/null
+++ b/spec/controllers/projects/settings/merge_requests_controller_spec.rb
@@ -0,0 +1,52 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Projects::Settings::MergeRequestsController do
+  let(:project) { create(:project_empty_repo, :public) }
+  let(:user) { create(:user) }
+
+  before do
+    project.add_maintainer(user)
+    sign_in(user)
+  end
+
+  describe 'GET show' do
+    it 'renders show with 200 status code' do
+      get :show, params: { namespace_id: project.namespace, project_id: project }
+
+      expect(response).to have_gitlab_http_status(:ok)
+      expect(response).to render_template(:show)
+    end
+  end
+
+  describe '#update', :enable_admin_mode do
+    render_views
+
+    let(:admin) { create(:admin) }
+
+    before do
+      sign_in(admin)
+    end
+
+    it 'updates Fast Forward Merge attributes' do
+      controller.instance_variable_set(:@project, project)
+
+      params = {
+        merge_method: :ff
+      }
+
+      put :update,
+          params: {
+            namespace_id: project.namespace,
+            project_id: project.id,
+            project: params
+          }
+
+      expect(response).to redirect_to project_settings_merge_requests_path(project)
+      params.each do |param, value|
+        expect(project.public_send(param)).to eq(value)
+      end
+    end
+  end
+end
diff --git a/spec/features/projects/settings/merge_requests_settings_spec.rb b/spec/features/projects/settings/merge_requests_settings_spec.rb
new file mode 100644
index 00000000000..ba84d8b6d1a
--- /dev/null
+++ b/spec/features/projects/settings/merge_requests_settings_spec.rb
@@ -0,0 +1,261 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe 'Projects > Settings > Merge requests' do
+  include ProjectForksHelper
+
+  let(:user) { create(:user) }
+  let(:project) { create(:project, :public, namespace: user.namespace, path: 'gitlab', name: 'sample') }
+
+  before do
+    sign_in(user)
+
+    visit(project_settings_merge_requests_path(project))
+  end
+
+  it 'shows "Merge commit" strategy' do
+    page.within '.merge-request-settings-form' do
+      expect(page).to have_content 'Merge commit'
+    end
+  end
+
+  it 'shows "Merge commit with semi-linear history " strategy' do
+    page.within '.merge-request-settings-form' do
+      expect(page).to have_content 'Merge commit with semi-linear history'
+    end
+  end
+
+  it 'shows "Fast-forward merge" strategy' do
+    page.within '.merge-request-settings-form' do
+      expect(page).to have_content 'Fast-forward merge'
+    end
+  end
+
+  it 'shows Squash commit options', :aggregate_failures do
+    page.within '.merge-request-settings-form' do
+      expect(page).to have_content 'Do not allow'
+      expect(page).to have_content 'Squashing is never performed and the checkbox is hidden.'
+
+      expect(page).to have_content 'Allow'
+      expect(page).to have_content 'Checkbox is visible and unselected by default.'
+
+      expect(page).to have_content 'Encourage'
+      expect(page).to have_content 'Checkbox is visible and selected by default.'
+
+      expect(page).to have_content 'Require'
+    end
+  end
+
+  context 'when Merge Request and Pipelines are initially enabled', :js do
+    context 'when Pipelines are initially enabled' do
+      it 'shows the Merge Requests settings' do
+        expect(page).to have_content 'Pipelines must succeed'
+        expect(page).to have_content 'All threads must be resolved'
+
+        visit edit_project_path(project)
+
+        within('.sharing-permissions-form') do
+          within('[data-for="project[project_feature_attributes][merge_requests_access_level]"]') do
+            find('.gl-toggle').click
+          end
+        end
+
+        find('[data-testid="project-features-save-button"]').send_keys(:return)
+
+        visit project_settings_merge_requests_path(project)
+
+        expect(page).to have_content('Not Found')
+      end
+    end
+
+    context 'when Pipelines are initially disabled', :js do
+      before do
+        project.project_feature.update_attribute('builds_access_level', ProjectFeature::DISABLED)
+
+        visit project_settings_merge_requests_path(project)
+      end
+
+      it 'shows the Merge Requests settings that do not depend on Builds feature' do
+        expect(page).to have_content 'Pipelines must succeed'
+        expect(page).to have_content 'All threads must be resolved'
+
+        visit edit_project_path(project)
+
+        within('.sharing-permissions-form') do
+          within('.project-feature-controls[data-for="project[project_feature_attributes][builds_access_level]"]') do
+            find('.gl-toggle').click
+          end
+        end
+
+        find('[data-testid="project-features-save-button"]').send_keys(:return)
+
+        visit project_settings_merge_requests_path(project)
+
+        expect(page).to have_content 'Pipelines must succeed'
+        expect(page).to have_content 'All threads must be resolved'
+      end
+    end
+  end
+
+  context 'when Merge Request are initially disabled', :js do
+    before do
+      project.project_feature.update_attribute('merge_requests_access_level', ProjectFeature::DISABLED)
+
+      visit(project_settings_merge_requests_path(project))
+    end
+
+    it 'does not show the Merge Requests settings' do
+      expect(page).to have_content('Not Found')
+
+      visit edit_project_path(project)
+
+      within('.sharing-permissions-form') do
+        within('[data-for="project[project_feature_attributes][merge_requests_access_level]"]') do
+          find('.gl-toggle').click
+        end
+      end
+
+      find('[data-testid="project-features-save-button"]').send_keys(:return)
+
+      visit project_settings_merge_requests_path(project)
+
+      expect(page).to have_content 'Pipelines must succeed'
+      expect(page).to have_content 'All threads must be resolved'
+    end
+  end
+
+  describe 'Checkbox to enable merge request link', :js do
+    it 'is initially checked' do
+      checkbox = find_field('project_printing_merge_request_link_enabled')
+      expect(checkbox).to be_checked
+    end
+
+    it 'when unchecked sets :printing_merge_request_link_enabled to false' do
+      uncheck('project_printing_merge_request_link_enabled')
+      within('.merge-request-settings-form') do
+        find('.rspec-save-merge-request-changes')
+        click_on('Save changes')
+      end
+
+      find('.flash-notice')
+      checkbox = find_field('project_printing_merge_request_link_enabled')
+
+      expect(checkbox).not_to be_checked
+
+      project.reload
+      expect(project.printing_merge_request_link_enabled).to be(false)
+    end
+  end
+
+  describe 'Checkbox to remove source branch after merge', :js do
+    it 'is initially checked' do
+      checkbox = find_field('project_remove_source_branch_after_merge')
+      expect(checkbox).to be_checked
+    end
+
+    it 'when unchecked sets :remove_source_branch_after_merge to false' do
+      uncheck('project_remove_source_branch_after_merge')
+      within('.merge-request-settings-form') do
+        find('.rspec-save-merge-request-changes')
+        click_on('Save changes')
+      end
+
+      find('.flash-notice')
+      checkbox = find_field('project_remove_source_branch_after_merge')
+
+      expect(checkbox).not_to be_checked
+
+      project.reload
+      expect(project.remove_source_branch_after_merge).to be(false)
+    end
+  end
+
+  describe 'Squash commits when merging', :js do
+    it 'initially has :squash_option set to :default_off' do
+      radio = find_field('project_project_setting_attributes_squash_option_default_off')
+      expect(radio).to be_checked
+    end
+
+    it 'allows :squash_option to be set to :default_on' do
+      choose('project_project_setting_attributes_squash_option_default_on')
+
+      within('.merge-request-settings-form') do
+        find('.rspec-save-merge-request-changes')
+        click_on('Save changes')
+      end
+
+      wait_for_requests
+
+      radio = find_field('project_project_setting_attributes_squash_option_default_on')
+
+      expect(radio).to be_checked
+      expect(project.reload.project_setting.squash_option).to eq('default_on')
+    end
+
+    it 'allows :squash_option to be set to :always' do
+      choose('project_project_setting_attributes_squash_option_always')
+
+      within('.merge-request-settings-form') do
+        find('.rspec-save-merge-request-changes')
+        click_on('Save changes')
+      end
+
+      wait_for_requests
+
+      radio = find_field('project_project_setting_attributes_squash_option_always')
+
+      expect(radio).to be_checked
+      expect(project.reload.project_setting.squash_option).to eq('always')
+    end
+
+    it 'allows :squash_option to be set to :never' do
+      choose('project_project_setting_attributes_squash_option_never')
+
+      within('.merge-request-settings-form') do
+        find('.rspec-save-merge-request-changes')
+        click_on('Save changes')
+      end
+
+      wait_for_requests
+
+      radio = find_field('project_project_setting_attributes_squash_option_never')
+
+      expect(radio).to be_checked
+      expect(project.reload.project_setting.squash_option).to eq('never')
+    end
+  end
+
+  describe 'target project settings' do
+    context 'when project is a fork' do
+      let_it_be(:upstream) { create(:project, :public) }
+
+      let(:project) { fork_project(upstream, user) }
+
+      it 'allows to change merge request target project behavior' do
+        expect(page).to have_content 'The default target project for merge requests'
+
+        radio = find_field('project_project_setting_attributes_mr_default_target_self_false')
+        expect(radio).to be_checked
+
+        choose('project_project_setting_attributes_mr_default_target_self_true')
+
+        within('.merge-request-settings-form') do
+          find('.rspec-save-merge-request-changes')
+          click_on('Save changes')
+        end
+
+        wait_for_requests
+
+        radio = find_field('project_project_setting_attributes_mr_default_target_self_true')
+
+        expect(radio).to be_checked
+        expect(project.reload.project_setting.mr_default_target_self).to be_truthy
+      end
+    end
+
+    it 'does not show target project section' do
+      expect(page).not_to have_content 'The default target project for merge requests'
+    end
+  end
+end
diff --git a/spec/features/projects/settings/user_manages_merge_requests_settings_spec.rb b/spec/features/projects/settings/user_manages_merge_requests_settings_spec.rb
index 6aa59f72d2a..c76b4d0af88 100644
--- a/spec/features/projects/settings/user_manages_merge_requests_settings_spec.rb
+++ b/spec/features/projects/settings/user_manages_merge_requests_settings_spec.rb
@@ -9,29 +9,29 @@ RSpec.describe 'Projects > Settings > User manages merge request settings' do
 
   before do
     sign_in(user)
-    visit edit_project_path(project)
+    visit project_settings_merge_requests_path(project)
   end
 
   it 'shows "Merge commit" strategy' do
-    page.within '#js-merge-request-settings' do
+    page.within '.merge-request-settings-form' do
       expect(page).to have_content 'Merge commit'
     end
   end
 
   it 'shows "Merge commit with semi-linear history " strategy' do
-    page.within '#js-merge-request-settings' do
+    page.within '.merge-request-settings-form' do
       expect(page).to have_content 'Merge commit with semi-linear history'
     end
   end
 
   it 'shows "Fast-forward merge" strategy' do
-    page.within '#js-merge-request-settings' do
+    page.within '.merge-request-settings-form' do
       expect(page).to have_content 'Fast-forward merge'
     end
   end
 
   it 'shows Squash commit options', :aggregate_failures do
-    page.within '#js-merge-request-settings' do
+    page.within '.merge-request-settings-form' do
       expect(page).to have_content 'Do not allow'
       expect(page).to have_content 'Squashing is never performed and the checkbox is hidden.'
 
@@ -52,30 +52,33 @@ RSpec.describe 'Projects > Settings > User manages merge request settings' do
         expect(page).to have_content 'Pipelines must succeed'
         expect(page).to have_content 'All threads must be resolved'
 
-        within('.sharing-permissions-form') do
-          find('.project-feature-controls[data-for="project[project_feature_attributes][merge_requests_access_level]"] .gl-toggle').click
-          find('[data-testid="project-features-save-button"]').send_keys(:return)
-        end
+        visit edit_project_path(project)
 
-        expect(page).not_to have_content 'Pipelines must succeed'
-        expect(page).not_to have_content 'All threads must be resolved'
+        find('.project-feature-controls[data-for="project[project_feature_attributes][merge_requests_access_level]"] .gl-toggle').click
+        find('[data-testid="project-features-save-button"]').send_keys(:return)
+
+        visit project_settings_merge_requests_path(project)
+
+        expect(page).to have_content "Page Not Found"
       end
     end
 
     context 'when Pipelines are initially disabled', :js do
       before do
         project.project_feature.update_attribute('builds_access_level', ProjectFeature::DISABLED)
-        visit edit_project_path(project)
+        visit project_settings_merge_requests_path(project)
       end
 
       it 'shows the Merge Requests settings that do not depend on Builds feature' do
         expect(page).to have_content 'Pipelines must succeed'
         expect(page).to have_content 'All threads must be resolved'
 
-        within('.sharing-permissions-form') do
-          find('.project-feature-controls[data-for="project[project_feature_attributes][builds_access_level]"] .gl-toggle').click
-          find('[data-testid="project-features-save-button"]').send_keys(:return)
-        end
+        visit edit_project_path(project)
+
+        find('.project-feature-controls[data-for="project[project_feature_attributes][builds_access_level]"] .gl-toggle').click
+        find('[data-testid="project-features-save-button"]').send_keys(:return)
+
+        visit project_settings_merge_requests_path(project)
 
         expect(page).to have_content 'Pipelines must succeed'
         expect(page).to have_content 'All threads must be resolved'
@@ -86,18 +89,22 @@ RSpec.describe 'Projects > Settings > User manages merge request settings' do
   context 'when Merge Request are initially disabled', :js do
     before do
       project.project_feature.update_attribute('merge_requests_access_level', ProjectFeature::DISABLED)
-      visit edit_project_path(project)
+      visit project_settings_merge_requests_path(project)
     end
 
     it 'does not show the Merge Requests settings' do
       expect(page).not_to have_content 'Pipelines must succeed'
       expect(page).not_to have_content 'All threads must be resolved'
 
+      visit edit_project_path(project)
+
       within('.sharing-permissions-form') do
         find('.project-feature-controls[data-for="project[project_feature_attributes][merge_requests_access_level]"] .gl-toggle').click
         find('[data-testid="project-features-save-button"]').send_keys(:return)
       end
 
+      visit project_settings_merge_requests_path(project)
+
       expect(page).to have_content 'Pipelines must succeed'
       expect(page).to have_content 'All threads must be resolved'
     end
diff --git a/spec/features/projects/settings/visibility_settings_spec.rb b/spec/features/projects/settings/visibility_settings_spec.rb
index fc78b5b5769..5cb12544066 100644
--- a/spec/features/projects/settings/visibility_settings_spec.rb
+++ b/spec/features/projects/settings/visibility_settings_spec.rb
@@ -28,26 +28,12 @@ RSpec.describe 'Projects > Settings > Visibility settings', :js do
       expect(visibility_select_container).to have_content 'Only accessible by project members. Membership must be explicitly granted to each user.'
     end
 
-    context 'merge requests select' do
-      it 'hides merge requests section' do
-        find('.project-feature-controls[data-for="project[project_feature_attributes][merge_requests_access_level]"] .gl-toggle').click
-
-        expect(page).to have_selector('.merge-requests-feature', visible: false)
-      end
-
-      context 'given project with merge_requests_disabled access level' do
-        let(:project) { create(:project, :merge_requests_disabled, namespace: user.namespace) }
-
-        it 'hides merge requests section' do
-          expect(page).to have_selector('.merge-requests-feature', visible: false)
-        end
-      end
-    end
-
     context 'builds select' do
       it 'hides builds select section' do
         find('.project-feature-controls[data-for="project[project_feature_attributes][builds_access_level]"] .gl-toggle').click
 
+        visit project_settings_merge_requests_path(project)
+
         expect(page).to have_selector('.builds-feature', visible: false)
       end
 
@@ -55,6 +41,8 @@ RSpec.describe 'Projects > Settings > Visibility settings', :js do
         let(:project) { create(:project, :builds_disabled, namespace: user.namespace) }
 
         it 'hides builds select section' do
+          visit project_settings_merge_requests_path(project)
+
           expect(page).to have_selector('.builds-feature', visible: false)
         end
       end
diff --git a/spec/features/projects_spec.rb b/spec/features/projects_spec.rb
index 9dcf3c5ab99..cbd9340b737 100644
--- a/spec/features/projects_spec.rb
+++ b/spec/features/projects_spec.rb
@@ -418,8 +418,7 @@ RSpec.describe 'Project' do
       visit path
     end
 
-    it_behaves_like 'dirty submit form', [{ form: '.js-general-settings-form', input: 'input[name="project[name]"]' },
-                                          { form: '.rspec-merge-request-settings', input: '#project_printing_merge_request_link_enabled' }]
+    it_behaves_like 'dirty submit form', [{ form: '.js-general-settings-form', input: 'input[name="project[name]"]' }]
   end
 
   describe 'view for a user without an access to a repo' do
diff --git a/spec/frontend/design_management/components/design_notes/design_note_spec.js b/spec/frontend/design_management/components/design_notes/design_note_spec.js
index 28833b4af5c..df511586c10 100644
--- a/spec/frontend/design_management/components/design_notes/design_note_spec.js
+++ b/spec/frontend/design_management/components/design_notes/design_note_spec.js
@@ -43,6 +43,7 @@ describe('Design note component', () => {
     wrapper = shallowMountExtended(DesignNote, {
       propsData: {
         note: {},
+        noteableId: 'gid://gitlab/DesignManagement::Design/6',
         ...props,
       },
       data() {
diff --git a/spec/frontend/design_management/components/design_notes/design_reply_form_spec.js b/spec/frontend/design_management/components/design_notes/design_reply_form_spec.js
index f7ce742b933..e36f5c79e3e 100644
--- a/spec/frontend/design_management/components/design_notes/design_reply_form_spec.js
+++ b/spec/frontend/design_management/components/design_notes/design_reply_form_spec.js
@@ -1,5 +1,6 @@
 import { mount } from '@vue/test-utils';
 import { nextTick } from 'vue';
+import Autosave from '~/autosave';
 import DesignReplyForm from '~/design_management/components/design_notes/design_reply_form.vue';
 
 const showModal = jest.fn();
@@ -13,6 +14,7 @@ const GlModal = {
 
 describe('Design reply form component', () => {
   let wrapper;
+  let originalGon;
 
   const findTextarea = () => wrapper.find('textarea');
   const findSubmitButton = () => wrapper.findComponent({ ref: 'submitButton' });
@@ -24,6 +26,7 @@ describe('Design reply form component', () => {
       propsData: {
         value: '',
         isSaving: false,
+        noteableId: 'gid://gitlab/DesignManagement::Design/6',
         ...props,
       },
       stubs: { GlModal },
@@ -31,8 +34,14 @@ describe('Design reply form component', () => {
     });
   }
 
+  beforeEach(() => {
+    originalGon = window.gon;
+    window.gon.current_user_id = 1;
+  });
+
   afterEach(() => {
     wrapper.destroy();
+    window.gon = originalGon;
   });
 
   it('textarea has focus after component mount', () => {
@@ -66,6 +75,25 @@ describe('Design reply form component', () => {
     expect(findSubmitButton().html()).toMatchSnapshot();
   });
 
+  it.each`
+    discussionId                         | shortDiscussionId
+    ${undefined}                         | ${'new'}
+    ${'gid://gitlab/DiffDiscussion/123'} | ${123}
+  `(
+    'initializes autosave support on discussion with proper key',
+    async ({ discussionId, shortDiscussionId }) => {
+      createComponent({ discussionId });
+      await nextTick();
+
+      // We discourage testing `wrapper.vm` properties but
+      // since `autosave` library instantiates on component
+      // there's no other way to test whether instantiation
+      // happened correctly or not.
+      expect(wrapper.vm.autosaveDiscussion).toBeInstanceOf(Autosave);
+      expect(wrapper.vm.autosaveDiscussion.key).toBe(`autosave/Discussion/6/${shortDiscussionId}`);
+    },
+  );
+
   describe('when form has no text', () => {
     beforeEach(() => {
       createComponent({
@@ -120,28 +148,37 @@ describe('Design reply form component', () => {
     });
 
     it('emits submitForm event on Comment button click', async () => {
+      const autosaveResetSpy = jest.spyOn(wrapper.vm.autosaveDiscussion, 'reset');
+
       findSubmitButton().vm.$emit('click');
 
       await nextTick();
       expect(wrapper.emitted('submit-form')).toBeTruthy();
+      expect(autosaveResetSpy).toHaveBeenCalled();
     });
 
     it('emits submitForm event on textarea ctrl+enter keydown', async () => {
+      const autosaveResetSpy = jest.spyOn(wrapper.vm.autosaveDiscussion, 'reset');
+
       findTextarea().trigger('keydown.enter', {
         ctrlKey: true,
       });
 
       await nextTick();
       expect(wrapper.emitted('submit-form')).toBeTruthy();
+      expect(autosaveResetSpy).toHaveBeenCalled();
     });
 
     it('emits submitForm event on textarea meta+enter keydown', async () => {
+      const autosaveResetSpy = jest.spyOn(wrapper.vm.autosaveDiscussion, 'reset');
+
       findTextarea().trigger('keydown.enter', {
         metaKey: true,
       });
 
       await nextTick();
       expect(wrapper.emitted('submit-form')).toBeTruthy();
+      expect(autosaveResetSpy).toHaveBeenCalled();
     });
 
     it('emits input event on changing textarea content', async () => {
@@ -180,10 +217,13 @@ describe('Design reply form component', () => {
     });
 
     it('emits cancelForm event on modal Ok button click', () => {
+      const autosaveResetSpy = jest.spyOn(wrapper.vm.autosaveDiscussion, 'reset');
+
       findTextarea().trigger('keyup.esc');
       findModal().vm.$emit('ok');
 
       expect(wrapper.emitted('cancel-form')).toBeTruthy();
+      expect(autosaveResetSpy).toHaveBeenCalled();
     });
   });
 });
diff --git a/spec/frontend/pipelines/mock_data.js b/spec/frontend/pipelines/mock_data.js
index 24514d99078..57d1511d859 100644
--- a/spec/frontend/pipelines/mock_data.js
+++ b/spec/frontend/pipelines/mock_data.js
@@ -528,7 +528,6 @@ export const mockPipelineJobsQueryResponse = {
               artifacts: {
                 nodes: [
                   {
-                    id: 'gid://gitlab/Ci::JobArtifact/101',
                     downloadPath: '/root/ci-project/-/jobs/620/artifacts/download?file_type=trace',
                     fileType: 'TRACE',
                     __typename: 'CiJobArtifact',
@@ -581,7 +580,6 @@ export const mockPipelineJobsQueryResponse = {
               artifacts: {
                 nodes: [
                   {
-                    id: 'gid://gitlab/Ci::JobArtifact/102',
                     downloadPath: '/root/ci-project/-/jobs/619/artifacts/download?file_type=trace',
                     fileType: 'TRACE',
                     __typename: 'CiJobArtifact',
diff --git a/spec/frontend/vue_shared/security_reports/mock_data.js b/spec/frontend/vue_shared/security_reports/mock_data.js
index a0e31243365..a9ad675e538 100644
--- a/spec/frontend/vue_shared/security_reports/mock_data.js
+++ b/spec/frontend/vue_shared/security_reports/mock_data.js
@@ -356,14 +356,12 @@ export const securityReportMergeRequestDownloadPathsQueryResponse = {
               artifacts: {
                 nodes: [
                   {
-                    id: 'gid://gitlab/Ci::JobArtifact/101',
                     downloadPath:
                       '/gitlab-org/secrets-detection-test/-/jobs/1399/artifacts/download?file_type=trace',
                     fileType: 'TRACE',
                     __typename: 'CiJobArtifact',
                   },
                   {
-                    id: 'gid://gitlab/Ci::JobArtifact/102',
                     downloadPath:
                       '/gitlab-org/secrets-detection-test/-/jobs/1399/artifacts/download?file_type=secret_detection',
                     fileType: 'SECRET_DETECTION',
@@ -380,14 +378,12 @@ export const securityReportMergeRequestDownloadPathsQueryResponse = {
               artifacts: {
                 nodes: [
                   {
-                    id: 'gid://gitlab/Ci::JobArtifact/103',
                     downloadPath:
                       '/gitlab-org/secrets-detection-test/-/jobs/1400/artifacts/download?file_type=trace',
                     fileType: 'TRACE',
                     __typename: 'CiJobArtifact',
                   },
                   {
-                    id: 'gid://gitlab/Ci::JobArtifact/104',
                     downloadPath:
                       '/gitlab-org/secrets-detection-test/-/jobs/1400/artifacts/download?file_type=sast',
                     fileType: 'SAST',
@@ -404,14 +400,12 @@ export const securityReportMergeRequestDownloadPathsQueryResponse = {
               artifacts: {
                 nodes: [
                   {
-                    id: 'gid://gitlab/Ci::JobArtifact/105',
                     downloadPath:
                       '/gitlab-org/secrets-detection-test/-/jobs/1401/artifacts/download?file_type=trace',
                     fileType: 'TRACE',
                     __typename: 'CiJobArtifact',
                   },
                   {
-                    id: 'gid://gitlab/Ci::JobArtifact/106',
                     downloadPath:
                       '/gitlab-org/secrets-detection-test/-/jobs/1401/artifacts/download?file_type=sast',
                     fileType: 'SAST',
@@ -428,21 +422,18 @@ export const securityReportMergeRequestDownloadPathsQueryResponse = {
               artifacts: {
                 nodes: [
                   {
-                    id: 'gid://gitlab/Ci::JobArtifact/107',
                     downloadPath:
                       '/gitlab-org/secrets-detection-test/-/jobs/1402/artifacts/download?file_type=archive',
                     fileType: 'ARCHIVE',
                     __typename: 'CiJobArtifact',
                   },
                   {
-                    id: 'gid://gitlab/Ci::JobArtifact/108',
                     downloadPath:
                       '/gitlab-org/secrets-detection-test/-/jobs/1402/artifacts/download?file_type=trace',
                     fileType: 'TRACE',
                     __typename: 'CiJobArtifact',
                   },
                   {
-                    id: 'gid://gitlab/Ci::JobArtifact/109',
                     downloadPath:
                       '/gitlab-org/secrets-detection-test/-/jobs/1402/artifacts/download?file_type=metadata',
                     fileType: 'METADATA',
@@ -477,14 +468,12 @@ export const securityReportPipelineDownloadPathsQueryResponse = {
             artifacts: {
               nodes: [
                 {
-                  id: 'gid://gitlab/Ci::JobArtifact/110',
                   downloadPath:
                     '/gitlab-org/secrets-detection-test/-/jobs/1399/artifacts/download?file_type=trace',
                   fileType: 'TRACE',
                   __typename: 'CiJobArtifact',
                 },
                 {
-                  id: 'gid://gitlab/Ci::JobArtifact/111',
                   downloadPath:
                     '/gitlab-org/secrets-detection-test/-/jobs/1399/artifacts/download?file_type=secret_detection',
                   fileType: 'SECRET_DETECTION',
@@ -501,14 +490,12 @@ export const securityReportPipelineDownloadPathsQueryResponse = {
             artifacts: {
               nodes: [
                 {
-                  id: 'gid://gitlab/Ci::JobArtifact/112',
                   downloadPath:
                     '/gitlab-org/secrets-detection-test/-/jobs/1400/artifacts/download?file_type=trace',
                   fileType: 'TRACE',
                   __typename: 'CiJobArtifact',
                 },
                 {
-                  id: 'gid://gitlab/Ci::JobArtifact/113',
                   downloadPath:
                     '/gitlab-org/secrets-detection-test/-/jobs/1400/artifacts/download?file_type=sast',
                   fileType: 'SAST',
@@ -525,14 +512,12 @@ export const securityReportPipelineDownloadPathsQueryResponse = {
             artifacts: {
               nodes: [
                 {
-                  id: 'gid://gitlab/Ci::JobArtifact/114',
                   downloadPath:
                     '/gitlab-org/secrets-detection-test/-/jobs/1401/artifacts/download?file_type=trace',
                   fileType: 'TRACE',
                   __typename: 'CiJobArtifact',
                 },
                 {
-                  id: 'gid://gitlab/Ci::JobArtifact/115',
                   downloadPath:
                     '/gitlab-org/secrets-detection-test/-/jobs/1401/artifacts/download?file_type=sast',
                   fileType: 'SAST',
@@ -549,21 +534,18 @@ export const securityReportPipelineDownloadPathsQueryResponse = {
             artifacts: {
               nodes: [
                 {
-                  id: 'gid://gitlab/Ci::JobArtifact/116',
                   downloadPath:
                     '/gitlab-org/secrets-detection-test/-/jobs/1402/artifacts/download?file_type=archive',
                   fileType: 'ARCHIVE',
                   __typename: 'CiJobArtifact',
                 },
                 {
-                  id: 'gid://gitlab/Ci::JobArtifact/117',
                   downloadPath:
                     '/gitlab-org/secrets-detection-test/-/jobs/1402/artifacts/download?file_type=trace',
                   fileType: 'TRACE',
                   __typename: 'CiJobArtifact',
                 },
                 {
-                  id: 'gid://gitlab/Ci::JobArtifact/118',
                   downloadPath:
                     '/gitlab-org/secrets-detection-test/-/jobs/1402/artifacts/download?file_type=metadata',
                   fileType: 'METADATA',
diff --git a/spec/graphql/types/ci/job_artifact_type_spec.rb b/spec/graphql/types/ci/job_artifact_type_spec.rb
index 3e054faf0c9..58b5f9cfcb7 100644
--- a/spec/graphql/types/ci/job_artifact_type_spec.rb
+++ b/spec/graphql/types/ci/job_artifact_type_spec.rb
@@ -4,7 +4,7 @@ require 'spec_helper'
 
 RSpec.describe GitlabSchema.types['CiJobArtifact'] do
   it 'has the correct fields' do
-    expected_fields = [:id, :download_path, :file_type, :name, :size, :expire_at]
+    expected_fields = [:download_path, :file_type, :name]
 
     expect(described_class).to have_graphql_fields(*expected_fields)
   end
diff --git a/spec/lib/sidebars/projects/menus/settings_menu_spec.rb b/spec/lib/sidebars/projects/menus/settings_menu_spec.rb
index 904b9f041b1..0733e0c6521 100644
--- a/spec/lib/sidebars/projects/menus/settings_menu_spec.rb
+++ b/spec/lib/sidebars/projects/menus/settings_menu_spec.rb
@@ -133,6 +133,12 @@ RSpec.describe Sidebars::Projects::Menus::SettingsMenu do
       end
     end
 
+    describe 'Merge requests' do
+      let(:item_id) { :merge_requests }
+
+      it_behaves_like 'access rights checks'
+    end
+
     describe 'Packages and registries' do
       let(:item_id) { :packages_and_registries }
       let(:packages_enabled) { false }
diff --git a/spec/services/users/migrate_records_to_ghost_user_service_spec.rb b/spec/services/users/migrate_records_to_ghost_user_service_spec.rb
new file mode 100644
index 00000000000..04310b977c0
--- /dev/null
+++ b/spec/services/users/migrate_records_to_ghost_user_service_spec.rb
@@ -0,0 +1,258 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe Users::MigrateRecordsToGhostUserService do
+  let!(:user) { create(:user) }
+  let(:service) { described_class.new(user, admin) }
+
+  let_it_be(:admin) { create(:admin) }
+  let_it_be(:project) { create(:project, :repository) }
+
+  context "when migrating a user's associated records to the ghost user" do
+    context 'for issues' do
+      context 'when deleted user is present as both author and edited_user' do
+        include_examples 'migrating records to the ghost user', Issue, [:author, :last_edited_by] do
+          let(:created_record) do
+            create(:issue, project: project, author: user, last_edited_by: user)
+          end
+        end
+      end
+
+      context 'when deleted user is present only as edited_user' do
+        include_examples 'migrating records to the ghost user', Issue, [:last_edited_by] do
+          let(:created_record) { create(:issue, project: project, author: create(:user), last_edited_by: user) }
+        end
+      end
+
+      context "when deleted user is the assignee" do
+        let!(:issue) { create(:issue, project: project, assignees: [user]) }
+
+        it 'migrates the issue so that it is "Unassigned"' do
+          service.execute
+
+          migrated_issue = Issue.find_by_id(issue.id)
+          expect(migrated_issue).to be_present
+          expect(migrated_issue.assignees).to be_empty
+        end
+      end
+    end
+
+    context 'for merge requests' do
+      context 'when deleted user is present as both author and merge_user' do
+        include_examples 'migrating records to the ghost user', MergeRequest, [:author, :merge_user] do
+          let(:created_record) do
+            create(:merge_request, source_project: project,
+                                   author: user,
+                                   merge_user: user,
+                                   target_branch: "first")
+          end
+        end
+      end
+
+      context 'when deleted user is present only as both merge_user' do
+        include_examples 'migrating records to the ghost user', MergeRequest, [:merge_user] do
+          let(:created_record) do
+            create(:merge_request, source_project: project,
+                                   merge_user: user,
+                                   target_branch: "first")
+          end
+        end
+      end
+
+      context "when deleted user is the assignee" do
+        let!(:merge_request) { create(:merge_request, source_project: project, assignees: [user]) }
+
+        it 'migrates the merge request so that it is "Unassigned"' do
+          service.execute
+
+          migrated_merge_request = MergeRequest.find_by_id(merge_request.id)
+          expect(migrated_merge_request).to be_present
+          expect(migrated_merge_request.assignees).to be_empty
+        end
+      end
+    end
+
+    context 'for notes' do
+      include_examples 'migrating records to the ghost user', Note do
+        let(:created_record) { create(:note, project: project, author: user) }
+      end
+    end
+
+    context 'for abuse reports' do
+      include_examples 'migrating records to the ghost user', AbuseReport do
+        let(:created_record) { create(:abuse_report, reporter: user, user: create(:user)) }
+      end
+    end
+
+    context 'for award emoji' do
+      include_examples 'migrating records to the ghost user', AwardEmoji, [:user] do
+        let(:created_record) { create(:award_emoji, user: user) }
+
+        context "when the awardable already has an award emoji of the same name assigned to the ghost user" do
+          let(:awardable) { create(:issue) }
+          let!(:existing_award_emoji) { create(:award_emoji, user: User.ghost, name: "thumbsup", awardable: awardable) }
+          let!(:award_emoji) { create(:award_emoji, user: user, name: "thumbsup", awardable: awardable) }
+
+          it "migrates the award emoji regardless" do
+            service.execute
+
+            migrated_record = AwardEmoji.find_by_id(award_emoji.id)
+
+            expect(migrated_record.user).to eq(User.ghost)
+          end
+
+          it "does not leave the migrated award emoji in an invalid state" do
+            service.execute
+
+            migrated_record = AwardEmoji.find_by_id(award_emoji.id)
+
+            expect(migrated_record).to be_valid
+          end
+        end
+      end
+    end
+
+    context 'for snippets' do
+      include_examples 'migrating records to the ghost user', Snippet do
+        let(:created_record) { create(:snippet, project: project, author: user) }
+      end
+    end
+
+    context 'for reviews' do
+      include_examples 'migrating records to the ghost user', Review, [:author] do
+        let(:created_record) { create(:review, author: user) }
+      end
+    end
+  end
+
+  context 'on post-migrate cleanups' do
+    it 'destroys the user and personal namespace' do
+      namespace = user.namespace
+
+      allow(user).to receive(:destroy).and_call_original
+
+      service.execute
+
+      expect { User.find(user.id) }.to raise_error(ActiveRecord::RecordNotFound)
+      expect { Namespace.find(namespace.id) }.to raise_error(ActiveRecord::RecordNotFound)
+    end
+
+    it 'deletes user associations in batches' do
+      expect(user).to receive(:destroy_dependent_associations_in_batches)
+
+      service.execute
+    end
+
+    context 'for batched nullify' do
+      it 'nullifies related associations in batches' do
+        expect(user).to receive(:nullify_dependent_associations_in_batches).and_call_original
+
+        service.execute
+      end
+
+      it 'nullifies last_updated_issues, closed_issues, resource_label_events' do
+        issue = create(:issue, closed_by: user, updated_by: user)
+        resource_label_event = create(:resource_label_event, user: user)
+
+        service.execute
+
+        issue.reload
+        resource_label_event.reload
+
+        expect(issue.closed_by).to be_nil
+        expect(issue.updated_by).to be_nil
+        expect(resource_label_event.user).to be_nil
+      end
+    end
+
+    context 'for snippets' do
+      let(:gitlab_shell) { Gitlab::Shell.new }
+
+      it 'does not include snippets when deleting in batches' do
+        expect(user).to receive(:destroy_dependent_associations_in_batches).with({ exclude: [:snippets] })
+
+        service.execute
+      end
+
+      it 'calls the bulk snippet destroy service for the user personal snippets' do
+        repo1 = create(:personal_snippet, :repository, author: user).snippet_repository
+        repo2 = create(:project_snippet, :repository, project: project, author: user).snippet_repository
+
+        aggregate_failures do
+          expect(gitlab_shell.repository_exists?(repo1.shard_name, "#{repo1.disk_path}.git")).to be(true)
+          expect(gitlab_shell.repository_exists?(repo2.shard_name, "#{repo2.disk_path}.git")).to be(true)
+        end
+
+        # Call made when destroying user personal projects
+        expect(Snippets::BulkDestroyService).not_to(
+          receive(:new).with(admin, project.snippets).and_call_original)
+
+        # Call to remove user personal snippets and for
+        # project snippets where projects are not user personal
+        # ones
+        expect(Snippets::BulkDestroyService).to(
+          receive(:new).with(admin, user.snippets.only_personal_snippets).and_call_original)
+
+        service.execute
+
+        aggregate_failures do
+          expect(gitlab_shell.repository_exists?(repo1.shard_name, "#{repo1.disk_path}.git")).to be(false)
+          expect(gitlab_shell.repository_exists?(repo2.shard_name, "#{repo2.disk_path}.git")).to be(true)
+        end
+      end
+
+      it 'calls the bulk snippet destroy service with hard delete option if it is present' do
+        # this avoids getting into Projects::DestroyService as it would
+        # call Snippets::BulkDestroyService first!
+        allow(user).to receive(:personal_projects).and_return([])
+
+        expect_next_instance_of(Snippets::BulkDestroyService) do |bulk_destroy_service|
+          expect(bulk_destroy_service).to receive(:execute).with({ skip_authorization: true }).and_call_original
+        end
+
+        service.execute(hard_delete: true)
+      end
+
+      it 'does not delete project snippets that the user is the author of' do
+        repo = create(:project_snippet, :repository, author: user).snippet_repository
+
+        service.execute
+
+        expect(gitlab_shell.repository_exists?(repo.shard_name, "#{repo.disk_path}.git")).to be(true)
+        expect(User.ghost.snippets).to include(repo.snippet)
+      end
+
+      context 'when an error is raised deleting snippets' do
+        it 'does not delete user' do
+          snippet = create(:personal_snippet, :repository, author: user)
+
+          bulk_service = double
+          allow(Snippets::BulkDestroyService).to receive(:new).and_call_original
+          allow(Snippets::BulkDestroyService).to receive(:new).with(admin, user.snippets).and_return(bulk_service)
+          allow(bulk_service).to receive(:execute).and_return(ServiceResponse.error(message: 'foo'))
+
+          aggregate_failures do
+            expect { service.execute }.to(
+              raise_error(Users::MigrateRecordsToGhostUserService::DestroyError, 'foo' ))
+            expect(snippet.reload).not_to be_nil
+            expect(
+              gitlab_shell.repository_exists?(snippet.repository_storage,
+                                              "#{snippet.disk_path}.git")
+            ).to be(true)
+          end
+        end
+      end
+    end
+
+    context 'when hard_delete option is given' do
+      it 'will not ghost certain records' do
+        issue = create(:issue, author: user)
+
+        service.execute(hard_delete: true)
+
+        expect(Issue).not_to exist(issue.id)
+      end
+    end
+  end
+end
diff --git a/spec/support/shared_contexts/navbar_structure_context.rb b/spec/support/shared_contexts/navbar_structure_context.rb
index 6543fc327d2..3b89ecf8995 100644
--- a/spec/support/shared_contexts/navbar_structure_context.rb
+++ b/spec/support/shared_contexts/navbar_structure_context.rb
@@ -109,6 +109,7 @@ RSpec.shared_context 'project navbar structure' do
           _('Webhooks'),
           _('Access Tokens'),
           _('Repository'),
+          _('Merge requests'),
           _('CI/CD'),
           _('Packages and registries'),
           _('Monitor'),
diff --git a/spec/support/shared_examples/users/migrate_records_to_ghost_user_service_shared_examples.rb b/spec/support/shared_examples/users/migrate_records_to_ghost_user_service_shared_examples.rb
new file mode 100644
index 00000000000..eb03f0888b9
--- /dev/null
+++ b/spec/support/shared_examples/users/migrate_records_to_ghost_user_service_shared_examples.rb
@@ -0,0 +1,39 @@
+# frozen_string_literal: true
+
+RSpec.shared_examples 'migrating records to the ghost user' do |record_class, fields|
+  record_class_name = record_class.to_s.titleize.downcase
+
+  let(:project) do
+    case record_class
+    when MergeRequest
+      create(:project, :repository)
+    else
+      create(:project)
+    end
+  end
+
+  before do
+    project.add_developer(user)
+  end
+
+  context "for a #{record_class_name} the user has created" do
+    let!(:record) { created_record }
+    let(:migrated_fields) { fields || [:author] }
+
+    it "does not delete the #{record_class_name}" do
+      service.execute
+
+      expect(record_class.find_by_id(record.id)).to be_present
+    end
+
+    it 'migrates all associated fields to the "Ghost user"' do
+      service.execute
+
+      migrated_record = record_class.find_by_id(record.id)
+
+      migrated_fields.each do |field|
+        expect(migrated_record.public_send(field)).to eq(User.ghost)
+      end
+    end
+  end
+end
diff --git a/spec/views/projects/edit.html.haml_spec.rb b/spec/views/projects/edit.html.haml_spec.rb
index a85ddf7a005..2935e4395ba 100644
--- a/spec/views/projects/edit.html.haml_spec.rb
+++ b/spec/views/projects/edit.html.haml_spec.rb
@@ -28,62 +28,6 @@ RSpec.describe 'projects/edit' do
     end
   end
 
-  context 'merge suggestions settings' do
-    it 'displays a placeholder if none is set' do
-      render
-
-      expect(rendered).to have_field('project[suggestion_commit_message]', placeholder: "Apply %{suggestions_count} suggestion(s) to %{files_count} file(s)")
-    end
-
-    it 'displays the user entered value' do
-      project.update!(suggestion_commit_message: 'refactor: changed %{file_paths}')
-
-      render
-
-      expect(rendered).to have_field('project[suggestion_commit_message]', with: 'refactor: changed %{file_paths}')
-    end
-  end
-
-  context 'merge commit template' do
-    it 'displays default template if none is set' do
-      render
-
-      expect(rendered).to have_field('project[merge_commit_template_or_default]', with: <<~MSG.rstrip)
-        Merge branch '%{source_branch}' into '%{target_branch}'
-
-        %{title}
-
-        %{issues}
-
-        See merge request %{reference}
-      MSG
-    end
-
-    it 'displays the user entered value' do
-      project.update!(merge_commit_template: '%{title}')
-
-      render
-
-      expect(rendered).to have_field('project[merge_commit_template_or_default]', with: '%{title}')
-    end
-  end
-
-  context 'squash template' do
-    it 'displays default template if none is set' do
-      render
-
-      expect(rendered).to have_field('project[squash_commit_template_or_default]', with: '%{title}')
-    end
-
-    it 'displays the user entered value' do
-      project.update!(squash_commit_template: '%{first_multiline_commit}')
-
-      render
-
-      expect(rendered).to have_field('project[squash_commit_template_or_default]', with: '%{first_multiline_commit}')
-    end
-  end
-
   context 'forking' do
     before do
       assign(:project, project)
diff --git a/spec/views/projects/settings/merge_requests/show.html.haml_spec.rb b/spec/views/projects/settings/merge_requests/show.html.haml_spec.rb
new file mode 100644
index 00000000000..821f430eb10
--- /dev/null
+++ b/spec/views/projects/settings/merge_requests/show.html.haml_spec.rb
@@ -0,0 +1,78 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+RSpec.describe 'projects/settings/merge_requests/show' do
+  include Devise::Test::ControllerHelpers
+  include ProjectForksHelper
+
+  let(:project) { create(:project) }
+  let(:user) { create(:admin) }
+
+  before do
+    assign(:project, project)
+
+    allow(controller).to receive(:current_user).and_return(user)
+    allow(view).to receive_messages(current_user: user,
+                                    can?: true,
+                                    current_application_settings: Gitlab::CurrentSettings.current_application_settings)
+  end
+
+  describe 'merge suggestions settings' do
+    it 'displays a placeholder if none is set' do
+      render
+
+      placeholder = "Apply %{suggestions_count} suggestion(s) to %{files_count} file(s)"
+
+      expect(rendered).to have_field('project[suggestion_commit_message]', placeholder: placeholder)
+    end
+
+    it 'displays the user entered value' do
+      project.update!(suggestion_commit_message: 'refactor: changed %{file_paths}')
+
+      render
+
+      expect(rendered).to have_field('project[suggestion_commit_message]', with: 'refactor: changed %{file_paths}')
+    end
+  end
+
+  describe 'merge commit template' do
+    it 'displays default template if none is set' do
+      render
+
+      expect(rendered).to have_field('project[merge_commit_template_or_default]', with: <<~MSG.rstrip)
+        Merge branch '%{source_branch}' into '%{target_branch}'
+
+        %{title}
+
+        %{issues}
+
+        See merge request %{reference}
+      MSG
+    end
+
+    it 'displays the user entered value' do
+      project.update!(merge_commit_template: '%{title}')
+
+      render
+
+      expect(rendered).to have_field('project[merge_commit_template_or_default]', with: '%{title}')
+    end
+  end
+
+  describe 'squash template' do
+    it 'displays default template if none is set' do
+      render
+
+      expect(rendered).to have_field('project[squash_commit_template_or_default]', with: '%{title}')
+    end
+
+    it 'displays the user entered value' do
+      project.update!(squash_commit_template: '%{first_multiline_commit}')
+
+      render
+
+      expect(rendered).to have_field('project[squash_commit_template_or_default]', with: '%{first_multiline_commit}')
+    end
+  end
+end