JJcalifornian & zee112008eb2I,
My case is also handled by the same officer. Even I had sent the response on July 11th and it was received by USCIS on July 14th. My lawyer had sent to the Dallas address using FedEx. I had updated the address on 07/25 and it got reflected in the USCIS case status site. Did you guys send it to the Dallas address as well?