I upgraded to the new 0.923. I performed a backup of my world file. I also copied over the "Region 1" folder from an older backup as mentioned in the patch notes to fix old regions.
When starting up for the first time, I was presented with the "select new character" menu. The character selected started back in my first settlement on continent 1, and had none of my enchants or inventory.
I tried reverting to a different backup, but still, it restarts me as a brand new player. Not quite sure what I did wrong.
Edit: Ah, I see I was beat to the punch on
Mantis. Sure y'all will get this fixed forthwith!