@MojangSupport Hello, Support Team.
Recently I lost my world on the xbox one version, after playing in servers the world didn't show up in the worlds list, I tried to find answers on support forums but every other case were from players who turned off their consoles with the+
Please send us an email at https://help.minecraft.net/hc/en-us/requests/new … and we will assist. Remember to attach your Gamertag. ^SP