We're chasing our tails here. The definition of the copy function requires both an original and a copy. There is //always// an original and a copy. Thus, exact clones and copies made in teleport machines are always copies, separate from the original. There can be no copy function without an original and a copy. You can think of as many elaborate cloning thought experiments as you like; if they can be reduced to a copy function then the answer is simple.

I know I'm not the first person in this thread to declare the answer simple, but the author appears to be reaching the obvious if somewhat occluded correct conclusion.