My main xbox world that I have had for a long time randomly disappeared off my console. I restarted and signed account off my Xbox and it was back. The problem is everytime I try to load on it pops up with a message saying this world is not fully synced or has been corrupted go on a console where it's in a better state and then migrate it back. I don't know how to get my world back and it's the only world I actually cared about.