diff --git a/app/models/project.rb b/app/models/project.rb
index 3676185834..c869e05f7a 100644
--- a/app/models/project.rb
+++ b/app/models/project.rb
@@ -587,7 +587,7 @@ class Project < ActiveRecord::Base
   def delete_all_members
     me, mr = Member.table_name, MemberRole.table_name
     connection.delete("DELETE FROM #{mr} WHERE #{mr}.member_id IN (SELECT #{me}.id FROM #{me} WHERE #{me}.project_id = #{id})")
-    Member.delete_all(['project_id = ?', id])
+    Member.destroy_all(['project_id = ?', id])
   end
 
   def destroy_all_work_packages
diff --git a/app/models/project/copy.rb b/app/models/project/copy.rb
index 11a4895487..d0d25ee1a3 100644
--- a/app/models/project/copy.rb
+++ b/app/models/project/copy.rb
@@ -209,7 +209,7 @@ module Project::Copy
       end
     end
 
-      # Copies members from +project+
+    # Copies members from +project+
     def copy_members(project)
       # Copy users first, then groups to handle members with inherited and given roles
       members_to_copy = []
@@ -224,9 +224,15 @@ module Project::Copy
         next if role_ids.empty?
         new_member.role_ids = role_ids
         new_member.project = self
-        Redmine::Hook.call_hook(:copy_project_add_member, new_member: new_member, member: member)
         self.memberships << new_member
       end
+
+      # Update the omitted attributes for the copied memberships
+      self.memberships.each do |new_member|
+        member = project.memberships.find_by_user_id(new_member.user_id)
+        Redmine::Hook.call_hook(:copy_project_add_member, new_member: new_member, member: member)
+        new_member.save
+      end
     end
 
       # Copies queries from +project+