REF question

I am wondering if anybody can help me with following,
I filed I-485 7 months ago, I will change my job to another region, my attorney said they will withdraw my representation -- because my current employer paid them. I worried if INS send me REF letter to my current address, I won't get it. I wonder in such case, the online status or call service will also get updated? If so, I would be able to find out even the letter was lost.

Thanks a lot