QUOTE(RaTBoX @ May 6 2008, 07:06 PM)

Although you do have the green card in hand, you still have outstanding applicatations with USCIS (albeit useless ones which they should have cancelled). Rather than leaving ends open, and not wanting to run the risk of sending them a letter and expecting them to read something, I'd personally just go ahead and send them what they are asking for, and let the process complete (they wont issue the documents I imagine, and will send a notice explaining why). At least then you know they'll have caught up with themselves and everything is back in order.
That sounds pretty good to me. Thanks for your thoughts.