I-485 approved after RFE

EB1B I-140 &I-485 concurrently filed on 9/29/2005 to VSC.
I-140 approved in May, 2006.
I-485 transferred to TSC on 3/7/2007.
RFE issued on medical and legal status on 7/18/2007.
RFE received on 8/1/2007.
I-485 approved on 8/21/2007.