I have doubts regarding the game progress. Here is the situation: I have friends in both consoles and also own the 2 consoles. I'm thinking of getting the game for both consoles to play with them. And I was wondering if the game progress is transferable between the consoles or if I have to start from scratch on both of them. If I buy the game for Xbox One will my game progress in the Xbox One be transferred if I also buy it for the PS4? Or will I have to start over?