Here's something that suggests there MAY be some hope...

"Realize also that a "File Save" is rarely a direct write on top of the old file by the application. If that failed halfway through for any reason then you would have lost both old and new versions of the file. What's much more common is a sequence like this:

1.Write the new copy of the file to a temporary file
2.If that succeeds, then delete the old copy of the file
3.Rename the temporary file to the proper file name
As you can see, where the new file is written has nothing whatsoever to do with where the old file happened to be. To the file system they're just two different files."