Retrieving data from a backup was never really practical in a real workflow - for us anyway. We now set our autosave to overwrite the original file every 50 operations. This way the shared file is the correct one, and at worst you're out 50 operations. Nothing else worked for us, reliably. I'm not sure what the VW engineers think about this, but that's what we do. As stated above, and to them directly, trying to retrieve work from a back up when you're hoping all over a building is impossible.