Hello, I had applied for GC under EBa1 category (under premium processing), which was denied after an RFE (based on 1 out of 3 criteria; the other 2 were satisfied). My attorneys believed USCIS had erred since they did not even mention why they denied the strong evidences (they just mentioned the weak evidence as the reason of denial and completely overlooked strong ones). We filed an appeal i290B with them and roughly 23 days after we submitted the brief, my case status changed to 'Post-decision activity' saying 'On August x, 2017, we sent your Form I-290B, Notice of Appeal to the Commissioner, Receipt Number SRCxxxxxxxxxx, to the Administrative Appeals Office (AAO) for review. That office will mail you our decision or send you a request if it needs something from you. Please follow any instructions provided to you. If you move, go to www.uscis.gov/addresschange to give us your new mailing address.' This title changed the same day to 'Case Was Sent To The Administrative Appeals Office for Review' in place of 'Post-decision activity'. Now the question is I thought the AAO decision is returned to the field office to issue the final decision instead of AAO making the final call and mailing the applicant the final decision. So I am confused what's could this mean and would greatly appreciate a 2nd opinion on this. Thanks a ton!