I found a message by JREnvoy that read "Like once out of every three or four times I play, the "Resume Campaign" choice turns to "Start Campaign" and deletes all of my ****ing progress. I've made another topic on this issue a few days ago, but it's still happening, and I think I'm just going to quit playing the story until I figure out a solution. I quit by selecting "Save and Quit" from the menu, before anyone asks. I can't be the only one having this issue."
I've only just started playing Halo 4. I played the Prologue then started on Dawn. I've come to play it again but now having this problem. Just wondering if there was an answer?