I was using beta and made a copy of my Survival world so I could test it.When I left the beta and Minecraft updated to 1.17.41, I went on to my Survival world is said it was now experimental. I had not ever turned on experimental or entered the world while in beta so I don't know what to do.
MCPE-146508
My world turning experimental
Resolved
Fixed
1
(Unassigned)
653852
Plausible
Xbox
10.0.22000.2655
1.18.0.24 Beta, 1.17.41 Hotfix
1.18.0.27 Beta, 1.18.0
Retrieved
This bug should be fixed in the latest beta version, and the fix will be included in a future update when that is ready for full release (no specific date can be given). We will leave this ticket open as a point of reference until the fix has been fully released.