As the title says, the files keep getting automatically deleted for no odd reason…
Same problem. Saves will get deleted or kick you back to the start of the level.
my LASO playlist save got deleted, i was up to infinity on halo 4 
i think they should add a feature so you can select any level in a playlist you have completed, or make it so completing a level with the same setting counts as completing the plalist part, because now i have to replay 3 missions SLASO
Mine has been fine since i downloaded it on release day. Since the patch went in yesterday it has now reverted me back to the beginning of the level on Halo CE heroic campaign. I had played this level for hours only to click resume today and be back at the beginning. …so frustrating!