Data is missing

The same for me but the month of September ... I completed all the Daily Challenges until yesterday and today i found all the month empty. If I re-completed same games, close the app and re-open the month is empty another time !!

What happened ????

Are you missing data from any other game, or just Halo Reach? What saved data seems to be missing?

Yes, but it's very strange. These problems are frequent among EA gamers, especially Mass Effect 3. I however, have never heard of this problem with the Halo games. Although, missing save data is an old pastime with Halo 3: ODST. I eventually got so sick
of it that I played through the entire campaign in one sitting, the data usually applies itself to your gamertag... i.e. the audiophiles in game and such. However, I'm not saying... "hey, play the game through in one sitting", I'm not saying that at all.

Hi there Derekpeterson2

Sorry to hear you having this issue, I have to ask if you are on the same account? also have to ask if you use a external hard drive at all incase it was put on external hard drive?.

Have you tried a hard restart to see if it's just a glitch in your Xbox?