Actually we had an interview for our i485 application yesterday. It was good and everything went well. At the end of interview , interviewer told us that they will issue my visa once they recieved my petition. What does that mean? My petition(i130) is already aprroved and we took our i130 approval notice and the letter from the NVC at the interview. And we showed to her. Do we have to do anything on this situation? we are totally confused. Also i have the aproval notice for my i130, i765,i131. She said that my petition was filed in one location and i485 was filed in other location. So, she was saying, they have transfer the petition to the San francisco field office where we had the interview. So, do we have to request to transfer file or they will do internally? If yes how to request.