I was playing my world on Xbox one with NO WIFI meaning I was not connected to Xbox live at the time and when I left the world it disappeared from the list. I made a few new world and tested them and they also disappeared after exiting and saving. I am playing on version 1.16.40 (Nether Update) and lost over 20 hours of work as luckily I have backups though they are quite old. This bug has caused me to lose weeks of progress, I also tried reinstalling once re connected to WiFi and the world was still missing. Please is there anyway to recover the world.