Windchill user needs the modify permission to rename (change just name) a object in Windchill across all states.
If the wtobject is forward to released state where the object shouldn't be modified the user can't change name even a new revision is made because the modify permission is not allowed in release state of previous revision...
In some cases the rename operation is required and only admin or Product/Library manager can change the name.
The Idea is to create new permission for change name operation across all states to change it.
Customer needs is to rename MPMLInk operations during a change process and nowadays it is not possible.