The official word it that CSC's processing of K1 petitions once RFEs have been received there is based on your original NOA1 date - it doesn't matter if you were transferred.
Meaning, if you filed in March and you have returned your RFE, your petition will be processed FIRST. If you filed in April, you will be processed AFTER March filers, etc. etc.
She also said that the NVC is not going to be backed up and they can handle the influx of approved fiance visa petitions since almost all other visa categories have been filled for the year.
One last thing - if you get one of those funky, poorly written emails, she said you should call your senator's office and they will call California for a translation into English.
(I read her the "the document we made based on the approval or registration of this case was mailed directly to the person to whom issued" weird email and she agreed that it makes zero sense and that they need to explain it).
Hope this helps
