Side Note before reading: I have a digital download of the game, not a disk, it may or may not have a different effect depending on whether it's a disk or not, but I don't know.

So I was playing on a survival world that I've been playing on for months, so it has been previously saved countless times (so regular crashes only take me back to my last saved point in the world).

However there's a crash that causes the whole world to reset beyond return when you accidentally(by bumping into them)unplug one of the Xbox One cords.

In the situation of which I bumped into my cords, the one that plugs to an outlet (not the other one that plugs into the television) popped out, and the Xbox turned off while I was still in my world.

Then after that, I log back into Xbox Live to get back on MineCraft, but then it crashed in the middle to the Mojang loading screen (not sure if related to the unplug, or if Bedrock was just doing it's thing, and the loading crash was a coincidence).

Eventually after forcing my Xbox off, I got back on MineCraft normally, and my survival world is no longer on my worlds list, neither where it's order in the list was before I got on it today, or on the top of the world list, where the most recently played worlds are, and it's nowhere on the world list, and the world count gone down by one(48 to 47, also my Xbox is near full storage space, so storage isn't a factor here).

This is partially consistent, since this happened on another world I had three weeks ago, however when I tested how consistent this crash was at deleting saves, I created a new world, mined some leaves, saved once, and got back on, and unplugged it while I was still actively on the world, turned the Xbox back on, and for some reason it stayed on the world list. It might be required to save that world more than twice, or to have the world saved for a longer time than the amount of time I had my crash test world.