Capt Stott

So there I was, just started up Reach when I accidentally got signed out of xbox live. Ok, no problem. I sign back in and I'm suddenly back to a recruit? It then skitzes out again and I'm back to my original Field marshall with all my unlocked armor. I start playing and then I notice I have "new" armor. Every piece of armor has the new symbol next to it?! Well this is weird but I haven't lost anything. I then go to the campaign and see that apparently I've never played the campaign and all the missions are locked despite me having played to completion well over 130 missions. It still shows I've completed the campaign on legendary in my service record but I now have to play the campaign again If I want access to all the levels. If anyone has an easy fix this would be appreciated. This is my first post but none the less, anyone else experienced this strange glitch?