I just converted a 1.17.30.22 beta world to 1.17.23, to find that I had appeared in a subterranean cave (not where I last left) when I reached the surface, the beds had set their original color to red, villagers (and minecarts) had dissapeared, and my storage system was emptied (inventory was kept, but not anything else)

I’m guessing it’s related to block entity data, but am unsure.