I completed last months war games monthly challenge to the victor go the spoils 30 minutes before it changed to the new monthly challenge and was awarded the appropriate experience points. At that time i gained new rank and made significant progress to the next rank. Then when i went to play war games today i noticed i had gone from rank 48 back to 47 and the experience point i had been awarded had disappeared. When i look at my history on halo way-point it says i have completed one monthly challenge but i have no experience points to show for it. Please help.