I am in the process of getting a PS4, but would like to trade in my Ps3 towards the purchase. Do I require the PS3 console to transfer my data to PS4, or can I transfer it now, and then trade in my PS3, then log into my PS4 and have everything be a-ok? I'd just like to know if I need to have both consoles in my possession to do so, or if the data just gets clouded until I log into a PS4 with my acct.