editing lost

I made a bunch of edits yesterday and today could not find them. copy had reverted to 9/15/2011. So. much. extra. work.
It’s probably something I’m doing wrong. Any suggestions?

Do you have two copies of the project going on, maybe? A lot of times, people use the File/Save As feature thinking to save the project, but in fact that makes a new copy of the project. So if they come back later and load the original project they started, it appears as though stuff has been lost—it’s just in a different fork of the project in some other location. If you never used Save As, it still could be something like that—perhaps try using Windows content search to grind away on a phrase or two you remember writing. That often turns things up for me in places I don’t expect.