回复：请问: AP 申请是都寄到CHICAGO OFFICE还是到原485申请OFFICE?

In fact, in 2008, paper filing EAD/AP based on EB I-485 should be TSC or NSC based on where you live, not where your I-485 is pending now, that what the official instructions say. Although I haven't seen any rejection due to sending to the other center.