If you get a world in 22w16b (did not try in other versions) and switch to 22w17a, your advancments do not carry over. As you can see in the picture provided (on my survival world without cheats) I have not even got the advancemnts for entering The End, but I got advancment for having elytra since I have it in my inventory.
I would have gotten side by side picture, but I cannot due to the bug with allays crashing your game.
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No worries. The issue has been fixed for a future version of Minecraft, so the problem will no longer occur soon. 🙂
Thank you for your report!
We're tracking this issue in MC-250954, so this ticket is being resolved and linked as a duplicate.
That ticket has already been resolved as Fixed. Please check the Fix Version/s field in that ticket to see in which version this behavior was or will be fixed.
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This is because players in singleplayer in 22w17a are assigned a new UUID, therefore making this a duplicate of MC-250954.