EB2 (NOT NIW), China. Got the transfer notice in the mail. Case was transferred to Baltimore office on 6/10/2000. PD 5/22/97, ND 6/22/99. FP 4/08/2000, FBI sent it back to INS on 4/18/2000. Need to wait for interview. Looks like VSC is transferring every MD cases to Baltimore. Any ideas how long do I need to wait for interview? What should I bring and what should I expect from immigration officer?