Earlier quoted context omitted.
The sensation of identity is part of your memories and goes with them when copied.
Yes, but it will create a new sensation of identity on the copy, which would be equal but separate to yours. That's the gist of the point. See my other answers around this subthread.
Just imagine that, in the normal course of things, a person at time t is constantly being copied into a slightly different new person at t+dt and then destroyed. There is a causal connection and thus an inheritance of memories, but not single "essence about yourself" being conserved.
With current technology we only have a directed linear graph, like o -> o -> o -> ... . With uploading tech this graph will fork into two paths, but neither of them can claim to be "the original", because there is no such thing.
I mean, maybe this concept of "personal identity" is simply wrong. It's an illusion because currently threads of causality on people are linear, but that's just a technological limitation.