So just last month I beat Halo 4 on Legendary solo all the way through. It was incredibly awesome and I got the achievements I was supposed to. However just the other day my roomies and I decided that we should get back into multiplayer to warm up for MCC coming out soon. When we were done playing online last night I went into the campaign menu just to look at the mission select screen to show off my accomplishment. To my surprise and horror all of my campaign progress had been reset. Only the first mission was available - as if I was booting up the campaign for the first time. Confused I checked to see if my profile was still signed in, indeed it was. None of the other missions were visible and it looks like I haven't even cleared the first mission according to the in - game menu. What's really strange and terrifying about this is that I have looked at the mission screen on several occasions since my Legendary completion on Oct. 2nd 2014. They were all there and displaying the correct difficulty completions. I immediately began to panic and thought maybe if I reset my XBOX it will correct itself, no luck. I haven't noticed any title updates in awhile and since I have that set to manual I'm not sure how I could have missed it. What's more is several times in the past I have seen all my armor, loadouts, and emblems get wiped and I have to go back and redo everything. My XP level stays where it is but the game forgets all the character customization. Lastly Spartan Ops is unaffected by this memory wipe, all the progress I've made there is exactly as it should be.
Please 343 fix this bug. I've mostly enjoyed Halo 4 while others have bashed it but this is too much. Was there a recent title update that caused this? What would effect the status of my system's save games like that? It's just weird, and annoying, and maddening. I didn't see any post of this nature so hopefully someone will know what the heck happened. God I hope there is a fix.