This is what I did that seemed to save it fine: 1) Hit Play Offline. 2) Create game. 3) Start game. 4) After game is done starting up, hit the Home/Pause button in the upper right. 5) Choose Exit game. 6) Once back to the Main Menu hard quit out of game. 7) Restart the game. 8) Hit Play Offline. 9) Save is waiting for me.