Update: I called turbotax support to see if they could help me. They said that this is a know problem and they are working on it, but apparently not very hard judging from the length of time since this was first reported on this thread.
What's really annoying is they sent me a link where to the IRS where I could request a copy of my old return, and the email with the link had the title "case resolved" !!1 No, it is not resolved. Turbotax deleted two copies of my file and they were unable to restore them or even fix the software problem that caused it.
