My husband and I went at the end of March on a wednesday with an infopass appointment and were asked to resubmit the form and them given another appointment to comeback after 2 weeks again a wednesday at 9.00am to collect the ead cards. Our cases were already transfered to DC office. The appmnt was on my name but they let us both in given a token and waited for 10 mins or so and then were called to the window. We were done with our ead questions in 5 mins. Both of us were given different tokens so went to different windows.
When an I-485 is accepted at the Service Center, requests for FD-258 FBI fingerprint checks, fingerprint fees, and G-325A consular background checks are made by USCIS. Responses to these requests come back to USCIS and must be matched up with the appropriate files held in staging. File Maintenance "file connects" these responses to the corresponding files.