Noticed that after matches it shows all my commendations at level one, and it gives me a point for flag victory. All of my commendations in the menu seem to be fine though.
Most people’s commendations have been wiped clean, they have to restart them all over. 343 is reportedly working on the issue. Hopefully they’ll fix it soon 
hope this helps! 
You know, I’m probably one of the people that is most nonplussed by the issue, having completed all of the commendations that mattered to me and gotten the emblems for such… Which means, if my commendations HAVE reset, it means I can get more of the gold req packs that came with WZFF 8D
Hey Sam, this is a known issue right now. Make sure to follow this topic for updates from Bravo: https://www.halowaypoint.com/en-us/forums/e0d9938206f04a598ce84f2c8cadce02/topics/343-response-commendations-wiped-clean/af439e71-84ba-4622-ad4c-65952e0ce863/posts