I noticed that my daily and weekly War Game Challenge status in Halo 4 and on Waypoint are different. Waypoint correctly logs the Deadeye challenges as complete, but Halo 4 logs them as incomplete (reset to zero when I played earlier today).
I’ve had problems with the challenges too. Some will reset, some will become completed when I never did them and then reset later on. It’s getting a tad annoying.