Lost campaign progress in Battlefield 4 Xbox One

Same here. It doesn't seem to be system dependent either. It happened to me on 360 and the PS3 and PS4 users have reported it as well (not sure about PC). From what I can tell it seems that if you start the campaign and then play a multiplayer game afterwards it causes your save file to become corrupted. Really frustrating! Between this, the constant crashes on 360 when joining a game, and getting kicked out of game on the One it's quite clear just how little testing this game underwent. For once I would just like a game to be released that, in the very least, is FINISHED and doesn't require 5 GB's of updates to fix game breaking bugs that should have never been there in the first place. /rant over