diff --git a/activerecord/lib/active_record/base.rb b/activerecord/lib/active_record/base.rb
index <HASH>..<HASH> 100644
--- a/activerecord/lib/active_record/base.rb
+++ b/activerecord/lib/active_record/base.rb
@@ -1614,11 +1614,6 @@ MSG
         self
       end
 
-      def initialize_clone(other)
-        super
-        @persisted = other.persisted?
-      end
-
       # Returns +true+ if the record is read only. Records loaded through joins with piggy-back
       # attributes will be marked as read only since they cannot be saved.
       def readonly?
initialize_clone can go away