I just spoke with NSC rep and looks like there is no use of having old priority date.If you are eligible(Name check rule) according to new rule then they are going to consider the RD to approve the case not the PD.
B3 ,India,NSC
Labor PD: Feb 2001
I140 AD :Sep 2005
I485,I131,I765 FD:May 2006
FP :July 2006
AC21:Feb 2007
2nd EAD and AP Renewal Apllied Date:Feb 2007.
3rd EAD and AP applied date:02/05/2008
I140 LUD :11/04/07
I485 Luds:12/28/2006,12/29/2006,
SR1 Luds :06/28/2007,06/29/2007,06/30/2007.
SR Request response(06/19/2007 ):It's in Name check
Senator's Office response(10/22/2007): It's in Name check
Contacted NSC through POJ on 12/19/2007:Still in name check
Sent a letter to Congress man on 11/29/2007:Still in Name check(01/08/2008)
Address Change Lud :01/08/2008
Sent a letter to First lady :Still in Name check(Got response on 02/13/2008)
One more enquiry through Senator's office(02/10/2008):Waiting for response
I485 AD ??????