After hours of painstaking work something happened in Fi Boards and I lost most of it

There needs to be a better history system in place for Firefly Boards.  It is simply unacceptable that a simple tab switch can erase hours of work with no warning. Not 1 hour, not 2 hours, but close to 6 hours spanning across 2 days.

After putting together a collage with close to 120 images something happened and the window closed.  When I came back to the window there were only about 25 pictures from a much older revision.  This is so frustrating.  What would even cause this to happen? 

Literally nothing was saved from before yesterday. I know this is supposed to be informative for you to track down how this can happen but I think it is important not to understate just how angry I am right now. This is affecting a deadline, this is affecting my continued support of Adobe products regardless of beta-status or not.

It's kind of hilarious that the bottom of this bug report has a little message letting me know when my anger fueled rant was last auto-saved.  Would have been nice to know that little tidbit on my Firefly Board so I could visually see that it hadn't been saving properly.