1. Open one existing service in two tabs at once.
2. In tab #2 delete the service.
3. In tab #1 press clone.
4. Press "Add".
5. Observe that URL is incorrect (?action=service.list.edit&serviceid=15, for example) and leads to the old service resulting in "Access denied" page.

In other forms when cloning two things happen:
a) If clone performs a submit, we immediately see Access denied in the same popup window.
b) If clone does not perform a submit, but simply changes the buttons etc, after adding that object, user is redirected to its list view.

So in this case, expected behavior would be to redirect user to services list view.