Stats being reduced?

Anyone else having profile stats being reduced? So far my mission completed stats has been reduced twice, once from around 21 missions completed to 8 completed, and a second time going from around 98 completed to 11 completed. Now most recently my playlist stats have been reduced from 11 completed to 2 completed, along with my play time being reduced from 105 hours to 5 hours. Some of these stats are tied to achievements so I’m not too sure if this is a problem with xbox live or with halo waypoint. Not sure why this is happening, it seems to be a bit random.
Just wanted to know if anyone else is having the same issue. Thanks.