there is no way that i have found to get the file back once you close it.

i have been able to undo a  major OOPS!  of "saving" a file when i meant to do a "save as", but that only works if you have not closed the file.

REVERT won't work cause that just brings you to the last save and that's what the problem is. 

What i did was to go back in the HISTORY of the file to "undo" the save - the trade off was that i lost the work that i just did. but that was better than losing the original file...

it would be nice to find an alternative...

scott