My battlefield 4 saved data gets erased everytime I go to the campaign to continue on in the campaign you can reach me at ********* would be nice if I could get a new copy but this game new at launch ☹️ do u know why?
***EDIT REMOVED PERSONAL INFO FROM POST***
PS4 have an option to save on the Cloud drive. Just as ragnarok013 suggests, be careful as it could over write your good files with bad files.
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