If you destroy My body and recreate it, nothing will have been lost. The continuity within the meat computer in my head is all that I am.
If you perfectly recreate your body without destroying the original, the original doesn’t start seeing and hearing through the clone. As far as the rest of the world is concerned, there’s no difference between the you that steps into the transporter and the you that steps out of it, but you do actually die when you’re “transported.” You don’t get to see what’s on the other side of the transporter, another being that shares your exact memories does.
If you perfectly recreate your body without destroying the original, the original doesn’t start seeing and hearing through the clone. As far as the rest of the world is concerned, there’s no difference between the you that steps into the transporter and the you that steps out of it, but you do actually die when you’re “transported.” You don’t get to see what’s on the other side of the transporter, another being that shares your exact memories does.