At 0800 UTC, DICE began backend maintenance for PC players. At 0919 UTC the Community Manager issued an update that they were pausing the maintenance as there appeared to be an issue. There has been a desync with the database, and ALL STATS have been wiped, including load outs, unlocks, ranks, etc. At this time, it is still being investigated. Once this issue has been resolved, we will fix any issues with statistics that may appear in our database. Here’s a link to the Reddit thread to follow:

https://www.reddit.com/r/Battlefield/comments/h06gy7/bf4_battlefield_4_in_maintenance/

We will respond here with updates on this situation as well.

UPDATE: Issue has been resolved and any stats earned while playing during the maintenance has been merged with previous stats.