Originally requested in bug 327888. Reproducible: Always Steps to Reproduce: 1. Copy one or more classes in the list view 2. Paste it in the same folder Or 1. Copy diagram 2. Paste diagram to other instance Actual Results: A dialog is printed which says that those classes are already present and asks the user to give a new object name. Expected Results: The dialog should have an checkbox or button to skip the rename and if choosen umbrello should use the already present class. To give the user a smarter paste experience in the case that there are many common classes the dialog should get an additional checkbox to remember the skip decision for this paste.