I have a problem with following situation : I always play fifa 12 online with my backup dvd and I bought a pass key from ea to play it online. Due to dae.bin update and flagging problems I decide to buy an original fifa 12 and now I have an original disk. My question is must I buy a new online pass key to play fifa 12 online because of this new original disk or I can go on with that old online pass key which I bought for my backup dvd without concerning about flagging and such problems? 

Also bear in mind that my xbox now is flashed with LT+2.0 and I did not flagged with silent update of dae.bin