diff --git a/actionpack/CHANGELOG.md b/actionpack/CHANGELOG.md
index cd419b68f7..44d87878a4 100644
--- a/actionpack/CHANGELOG.md
+++ b/actionpack/CHANGELOG.md
@@ -4,10 +4,5 @@
 
     *Jeremy Daer*
 
-*   Add alias method `to_hash` to `to_h` for `cookies`.
-    Add alias method `to_h` to `to_hash` for `session`.
-
-    *Igor Kasyanchuk*
-
 
 Please check [5-2-stable](https://github.com/rails/rails/blob/5-2-stable/actionpack/CHANGELOG.md) for previous changes.
diff --git a/actionview/CHANGELOG.md b/actionview/CHANGELOG.md
index 001cc21181..55f2148640 100644
--- a/actionview/CHANGELOG.md
+++ b/actionview/CHANGELOG.md
@@ -2,23 +2,21 @@
 
 *   Enable select tag helper to mark `prompt` option as `selected` and/or `disabled` for `required`
     field. Example:
-    
+
         select :post, 
                :category, 
                ["lifestyle", "programming", "spiritual"], 
                { selected: "", disabled: "", prompt: "Choose one" }, 
                { required: true }
-    
+
     Placeholder option would be selected and disabled. The HTML produced:
-    
+
         <select required="required" name="post[category]" id="post_category">
         <option disabled="disabled" selected="selected" value="">Choose one</option>
         <option value="lifestyle">lifestyle</option>
         <option value="programming">programming</option>
         <option value="spiritual">spiritual</option></select>
 
-    For details see GH#32080
- 
     *Sergey Prikhodko*
 
 *   Don't enforce UTF-8 by default
diff --git a/activemodel/CHANGELOG.md b/activemodel/CHANGELOG.md
index 8a3578229a..b28c83e4ed 100644
--- a/activemodel/CHANGELOG.md
+++ b/activemodel/CHANGELOG.md
@@ -1,9 +1,5 @@
 ## Rails 6.0.0.alpha (Unreleased) ##
 
-*   Do not lose all multiple `:includes` with options in serialization.
-
-    *Mike Mangino*
-
 *   Rails 6 requires Ruby 2.4.1 or newer.
 
     *Jeremy Daer*
diff --git a/activerecord/CHANGELOG.md b/activerecord/CHANGELOG.md
index 227f93c6a1..325c4abfc8 100644
--- a/activerecord/CHANGELOG.md
+++ b/activerecord/CHANGELOG.md
@@ -1,19 +1,5 @@
 ## Rails 6.0.0.alpha (Unreleased) ##
 
-*   Fix `#columns_for_distinct` of MySQL and PostgreSQL to make
-    `ActiveRecord::FinderMethods#limited_ids_for` use correct primary key values
-    even if `ORDER BY` columns include other table's primary key.
-
-    Fixes #28364.
-
-    *Takumi Kagiyama*
-
-*   Make `reflection.klass` raise if `polymorphic?` not to be misused.
-
-    Fixes #31876.
-
-    *Ryuta Kamizono*
-
 *   Rails 6 requires Ruby 2.4.1 or newer.
 
     *Jeremy Daer*