H1B Status Changed from Approved to Initial Review


My H1B (normal processing) status was approved last week after RFE response was done. I checked the status again today and it has moved back to initial review , the explanatory message says -

"On August X, 2014, your address was changed relating to the I129, PETITION FOR A NONIMMIGRANT WORKER that you filed… "

I am not authorized to change the address, its always the petitioner and/or the lawyer. I spoke with USCIS and requesting what it means in such a situation ( like in this case status changing from Approved to Initial Review), and the person said that Approved Status can not be overriden.

Any insights would be appreciated.