Code 2 goes on your Green card. Thats not fingerprints. You are being asked for Code 1 because your fingerprints have expired. If you remember, you did FP in 2004 right? Those have expired now and your fingerprints will be taken again and sent to FBI and then when they are cleared, the officer will start to work on your case again. Its a stupid process since FP's dont change but as it works in the U.S Government(as i work for one of the entities), To request something from another U.S Government entity, there is a process that is followed, You can't just pick up a phone and say "hey frank send me those FP's for Atique Rahman"...
As it is with Government, everything is paper and everything should have evidence of it.