So I just got back into playing halo 4 after some time (like 3 years!). And I remembered that before I stopped playing I lost all my progress like campaign, armor, loadouts, etc. I found this issue on a forum here from a couple years ago, but I don't want to respond to something that old. Can someone who went through this problem long ago tell me how they fixed it? Thanks a lot!
OP Booshkin Bob