With a problem on the Microsoft's end. I had to factory reset my console. Which had caused some problems on my worlds. Some worlds failed to sync up, and others had shifted in the make up of the world. In some worlds I was in creative and it was registered as survival. Which could allow the player to unlock several acheivments.(I am unsure if that needed to be private or not.) Along with that some other worlds generation was turned on, like superflat worlds started normal world generation. (I tried sending some picture probably not helpful. It said there was a problem with sending them.)
Sorry if this is not helpful, thanks for your time though.
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A couple hours later, my corrupt worlds started working again, but the other are still corrupt with world settings forcibly shifting. Which still leaves the problem with Achievements, but i don't think that is a huge worry.
[Mojang] Mega_Spud (Jay)
I think this comes under the same general bug of worlds not syncing correctly, as mentioned in MCPE-26064.