I always backup my save data after every session, till yesterday, I was playing normally and then my ps4 turned off due to some issues I have with cables, and of course my player save data got corrupted. After turn my ps4 on I couldnt play any games so I had to delete my user, everything was ok again. I upload my save and started the game thinking I've lost that new Green Lantern and Bane gear I got the day before, but no, everything was there and a few mother boxes too (but the motherboxes dissapear so I'm guessing NRS have your game data on their servers), after that I set the AI in a multiverse event and notice that I'm getting lots of profile xp and credits, Didnt know what happend till hours later, the bonus for connect a special move was popping like crazy, 10,000 credits and profile xp after connect a special move.
So if someone wants to try, save all your data before injustice's:
1- save all of your injustice's data (there are 3, game data, multiverse data and player save data)
2- play the game and get some gear
3- delete only your player save data (without doing another backup)
4- upload only your player save data (but do not run the game)
5- delete your user
6- first upload all of your Injustice's data and run the game.
7- start a fight and try connecting special moves.
Let's hope It had anything to do with the reason that I couln't run any games after the ps4 turned off.