My AC21 case was approved yesterday. I changed my job after two years of applying I-485 . Mine was a labor substitute case too.
RD : 4/18/2002
ND : 4/27/2002
RFE : 6/1/2004(tax returns, w2 for last two years, evl)
RFE replied 6/20/2004
RFE received by USCIS 8/6/2004(don't know why)
AD : 8/20/2004
RD : 4/18/2002
ND : 4/27/2002
RFE : 6/1/2004(tax returns, w2 for last two years, evl)
RFE replied 6/20/2004
RFE received by USCIS 8/6/2004(don't know why)
AD : 8/20/2004