I have a survival world created on the snapshot that has been on my computer for around four or five days now. I have played it for almost three hours on and off between the day created and about an hour ago. It was backed up and saved to my computer, but after a quick switch to 1.12.2 to play a server for 15 minutes, when I switched back to the snapshot, my world was gone. I can't find the backed up version, and it's nowhere in my files. This hasn't ever happened to me before and I would really like to get that world back. I didn't delete it or change any settings other than my version after I reloaded the launcher and game. Even if I log, out, my world is still gone. Is this a bug or a glitch, or is it just my computer? I've switched between 1.12.2 and other snapshots plenty of times before without issues, but the only time I've tried switching while in 19w12b, this happened.