> "Mind uploading" is the wrong way to look at it. How about "mind copying" for a best case (whether that copying requires the destruction of the original is another issue); "mind simulation" is a less palatable case.

One way we could do it, it's to slowly replace one by one natural neuron by a virtual or synthetic one and by keeping all synapse correctly connected. It should allow an "upload" (well more a conversion) without breaking consciousness continuity.