When I revert back to the legacy version. There is no guarantee that the two systems have exactly the same database. It was just bad timing. I was finalizing my thesis, really busy, and didn't realize this was a MAJOR overhaul of the system or I would have done a folder level backup.
I backed up as well but that was only as a nightmare situation of me losing everything and having to import back into another program. It's not something that I want to do since I won't have my folders and will have to painstakingly reorganize years of content.
And, of course, you can't backup this new system.