Congratualtions! Could you answer my questions? I appreciate you

I have been waiting for GC more than 3 years
1st FP: 10/2005, 2nd FP: 3/7/2007. NC was cleared in 1/2007. But case was transferred to NSC recently. Could you tell me the exact 2nd FP date, so that I can know how long I should take actions to call USCIS or write to senators. Before they approved your I485 case, did they ask you any supplement documents or interviews?

Thanks a lot!