So I just noticed on our team project, I can actually cut elements out of a checked in page using ctrl + X. As in cut out and they are no longer there. Fair enough, when I close the project an reopen, the elements are back where they should be. So no real harm as far I can see. But still… why can I edit a checked in page like that? You’d think this is prevented by the application.
I’m using 9.0.0.3717
I think it’s great that you can copy elements from a checked in page. But to cut is a completely different action 
Kind Regards
Tobi