If your case was transferred, USCIS will send you a notice listing the transfer date and where your case will be processed. Your original receipt number will not change. You should reference your original receipt number and indicate your case was transferred to a new location when making any case status inquiries.
If you have filed one of the affected form types and you receive a request for evidence or any other type of communication from USCIS, please read the notice carefully to ensure that you respond to the same service center that sent you the notice.
Redirecting Form I-129F
Starting the week of July 29, 2013, USCIS began redirecting all newly filed Forms I-129F from the VSC to the TSC. The receipt notice will bear a TSC receipt number beginning with “SRC”. The case will be processed by the TSC. The CSC will continue receiving Forms I-129F.
USCIS will post additional Web updates to inform customers of any future workload realignments." - USCIS, Aug. 8, 2013.