So, I just invested roughly 5-7 hours into the campaign, and I turned my xbox off because I had to go to work. I came home, wanting to start up the campaign, and here I get the message “save game data corrupted” and I proceeded. It’s fucking gone. My progress is gone. What happened?
That is the reason why i gave up campaign on the first day.
Even if You do not start a campaign It will sometimes corrupt the save file. Then You have to setup Your controls again. Pretty annoying.
I see. It’s so odd because it hasn’t affected anything on multiplayer other than the controls(as you stated). It’s kind of depressing because I want to unlock every gun in the game, and it seems like it’s nearly impossible.
Battlefield campaign has great plots. I’m pretty bummed I can’t experience that.
I didn’t see that message, but I had to start the campaign over again as well. I’ve seen posts of people restarting several times.
One recommendation is to quit to the main menu before turning the console off.
Glad to see its not just my problem. I’m having the same issue on PS4. 3 times now my campaign progress has just been reset, no error message nothing. Doing my head in
The campaign was shit. You haven’t missed anything.
the campaign takes maybe 6 hours.
Play through it for the guns, they are worth it.
I had the same problem (only I didn’t receive a message, Xbox 360) right after I downloaded premium. About 2 hours later all of my controls/ video settings reset too in multiplayer 
I had this problem on four different occasions. I’ve now played through the campaign 5 times on xbox one. after the latest patch everything seems to be fine, but damn it was annoying.
Some downvoted you, but battlefield 4’s campaign is shit compared to 3
welcome to the club