Campaign Missions Missing

So day 1, beat the campaign on legendary, and my service record reflects that… Has anyone else lost the ability to select missions when trying to play campaign? I only have prologue available, and it says I have never completed it.

I also went through the FAQ and deleted my friends campaign data because he doesn’t even play on my xbox anymore. What could be the issue? This randomly happened as far as I know.

same thing happened to me except i beat it on solo legendary and it never gave me my achievements for beating it on heroic,legendary, and solo legendary. it also wiped my campaign missions locking them all even though i had also completed the game on normal co op!

I tried tweeting @HaloWaypoint, and was ignored, they were replying to people’s issues all day. I’ll look into another way to contact 343i, I’ll let you know what I find.

I’ll be looking into this tomorrow, but I came across this in the Halo 4 section on this forum. Player was losing their LE Armor, and the answer was clearing the cache.