Lost all of my weapons, ammo, and shelter progress.

[Austin Ross 0]

I was playing for a few hours grinding out gear and get of to eat lunch. When I came back I had lost all of my progress. 

[CG96 7]

Restart the game, if that doesn't work restart your xbox. People on reddit have mentioned the issue is the cloud data not syncing 

[Vbcxc 0]

This has happened to me a couple times, restarting the game has fixed it everytime.