I had to take my iPhone into the ATT store this morning. Before I did, I backed it up. While I was at the store they wiped my phone to try to troubleshoot it, which was fine with me because I knew I had the backup. They weren't able to replace my phone (out of stock), so they sent me home with my old phone. When I connected it to iTunes to restore it, the first thing it did was sync, which seems to have wiped out my previous backup. When I try restore from backup now, the only choices I have are the backup created when I connected my phone after returning from the store, or one from a week ago. Is there a way I can retrieve my backup from before I went to the store? I use Time Machine, so if I know what file to retrieve I could restore the file from the last backup (of my computer) before I went to the store.