MM in daily mission is glitched?

Tonight, I just did 5 games of MM in daily mission. When I go into another server or exit Crossfire and come back again, it resets back to 0 games. This has cost me some dog tag letters before.. I thought I actually completed the daily mission and got a letter only to find out it's been reset and I have to do a mission again. I just noticed now that it only affects MM.