Xbox version has a serious save bug right now. Its hit both me (8 hours lost) and my wife (6 hours lost) on 2 separate Microsoft accounts.
Larian puts out this tweet:
View attachment 5560344
The issue is that Xbox hasnt actually done a system update yet, so people are just waiting for that.
The bug seems to be with Xbox cloud saves, and how the cloud saves are getting "full" and then overwriting previous saves. Its also not after a crash, but it may be related to the Xbox quick resume feature. Its a real bummer, I am enjoying the game immensely, but I am going to wait until this is actually patched out.