Ranked up my scout class twice to the same rank, all the gun/class missions ive been grinding today has been reset, seems to happen after every match. One thing that hasnt reset is my lvl. I know there has been some bf1 maintenance today, but it said only 30 mins downtime. Whats going on?
Edit: ranked up to the same lvl 3 times(58-59), keeps resetting
Same. And after searching for my game record only to find nothing recorded since April 15
Yeah. Me too. Just started playing and now have to unlock weapons over and over again. Hope they fix this fast. I enjoy this much more than Bf V
Stats are not updating.
well yeah, but also the guns i unlock gets removed
I also can confirm that I am losing rank ups after every single match. I find this particularly annoying as I am new to the game and have weapons that I am trying to unlock and ranks I’m trying to gain in the various classes… all of which is reset after each match. I’ve ranked from 6 to 7 in both support and medic multiple times today and each time after a game, it goes right back to level 6. Can we please have an acknowledgement from a programming, database or community team member that someone is aware of the problem and / or actively working on a solution?
Doh!
To keep myself amused I’m currently going back and trying to service star every variant of every weapon and vehicle. Played 2 full Ops and a round of Conquest last night using weapons I’m rubbish with. Checked companion app and none of the kills have counted. 
https://ea.response.lithium.com/portal/conversation/45007760 this is the response i got from someone at EA
Working again for me but none of the stats from yesterday is showing.
Seems to work again for me as well (PC), but just like von_Campenstein wrote above, only for new stats, nothing from yesterday showing up.
Hi had same problem on PS4. Completed 3 out of 5 elements for medal and it has been completely wiped out. It seemed to reset about 10.30gmt last night.