Interview was moved to a different district, although I didn't move out of district
Here is my short story. Me and my wife applied in March, 2016. We were scheduled for interview in SF district for August, 4. Few weeks before the interview we submitted address change request and later got our confirmation letters. The new physical address is the same city and the mailing address is the different district. Everything remain same for my wife but something wrong happened to my case. It was cancelled and in few days scheduled again for August 30 but in the _different district_ - the Santa Clara district where my mailing address is in.
After our lawyer messed up a H1 visa transfer for our employee, RSK Law Offices with it's unbeatable track record was our natural choice. Very talented and professional set of immigration experts, they knew exactly what to do when and worked with amazing speed. Surprisingly the fees are very competetive. We saved both time & money not to mention the peace of mind we got.