The issue is with the conscience and the soul. Essentially the question is: "If your whole body is taken apart atom by atom, does the soul get taken along with it?"
In this case, the soul can just mean 'you'. The 'you' that is seeing through your eyes right now, and is giving you the current experience you are now experiencing. To give an easier example, let's say you are copied exactly four feet to your right. Your copy will look exactly like you, have all your memories, yadda yadda yadda. It seems pretty obvious that 'you' won't all of a sudden be seeing through your copy's eyes, no? If you get vaporised, then, your conscience is not going to just teleport into your clone, right? At least there's nothing to suggest that would happen.
Teleportation is just a fancy version of this in a different order. You are vaporised first, then your atoms are moved real fast to the new location, then your copy uses those atoms. There's zero reason to think that the 'you' which was vaporised is ever coming back. Once it's gone, it's gone, or at least that's the idea.
Whether you believe in the spiritual concept of a soul, or that your experience of the world is just a specific instance of electrical charges in some fancy meat, both seem to suggest that once the anima departs, it will never return. A new anima must instead be made.