I have couple of friends who were Fingerprinted a year ago in Texas and they are still waiting for decisions on their 485's...
Although I do agree the process may vary from center to center, I mean in terms of timing and processing, the basic process of FP & re-fingerprinting remains the same.
Originally the Fingerprintes used to be valid for a year or so, but within a year I485 normally never gets a decision.... So guys are re-fingerprinted....Medical Checkup was same, but that got modified by a law which is renewed anually by BCIS...
From last year or so, BCIS kind of formed a policy / process where they will fingerprint only when I485 is nearing maturity/being decisioned..
I am not sure why you got FP notice so early but that is good news anyways...You are 1 step closer
Also cases do not get transferred from on center to another without any good reason (area of residential jurisdiction is not good enough reason to transfer the case....if that was good enough reason, BCIS would have never let you file 485 on any other center except area of your residential jurisdiction..)
One final thing on FP - If someone's I140 is approved and 485 is pending, he/she can walk into BCIS office and demand to be get fingerprinted (Ofcourse you might have to schedule an appointment....)
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There could be multiple notices for FP
The procedure to send out FP notices varies from center to center. For e.g. in Texas, FP notices are sent only after the I485 case is thoroughly processed. After the FP notice, the GC comes usually in 4-6 months in Tex.
However there are other centers where the FP notices are sent multiple times, if the I485 adjudication has not moved considerably over a period of time. (The whole notion of taking multiple finger prints is stupid since a person's finger print is not expected to change over a period of 1-2 yrs).
As regards to the notice coming from VSC instead of NSC, it would be interesting to see if NSC automatically routed your case to VSC since the applicant may have had or has residence in that jurisdiction.
My 2 ( finger ) pence.