No cell in the body you typed that with was with you when you were born, and no cell you were born with is with you still. You've replaced them all.

So, you've already moved your entire consciousness from one medium to another, you just did it piecemeal and without a disruption in function.

Now, if you fall in a frozen lake and, after being technically dead for a few minutes, are revived, I'll wager you still think that's you.

So if we can find practical examples of both disrupted function and transference to another medium, we'd have to suppose that doing both all at once is what makes the difference. I don't see that at all.

You are not your body, you are just that pattern of data dancing about. So long as it dances, it's you. If there were two of you for a moment, or a thousand, they'd all basically immediately start being someone else because the dances would begin to be different. But this idea that there is an authentic you of which copies are something else really doesn't hold up under scrutiny unless you believe in a soul.