I can copy or switch frames in the dream maker icon editor(based on the tool tip), but I don't see the option to delete/clear a frame or delete/paste a frame? It's super annoying not being able to quickly paste over or delete a frame.

Lets say I copy my frame 1 and try to paste it on frame 2. Frame 1 currently just gets added to frame 2. I want the paste to delete what is currently there or a way to just completely delete a frame without having to erase the entire frame myself.