it workz wiv v1z.hav a good stay on tamatalk tama_boi!You don't have to start over. When my V2 had a dead battery I just changed it and then selected download and it brings your tama back. You might just have to set the time and date again.
But no you can't download it to another.
Is it a V2 you have? I don't know if you can do what I said on a V1 ok.