I love how you dismiss the ship of theseus as pointless and act like we have any idea of the true nature of the self. In order to have any discussion of mind transfer, teleportation or the brain in general there are age old unsolved philosophical questions that must be answered to have any sort of emperical proof of concept. You obviously know the topic as you point to continuity but continuity is not enough.

You are not the same person you were 10 years ago. If I replace every cell in your body one by one with a nano machine that replicated the cells function you would maintain continuity but would you call 100% flesh you the same person as 100% nanobot you? How could you test that question? How can you prove any being is a specific person or not? Continuity can solve the legal problem but not the metaphysical one.

Consciousness has a lot of complicated gotchas in it for existing technology. Was phineas gage the same person before and after or people with retrograde amnesia. How much of the personality is just memories and how much is an emergent property?