This is my situation :
Working for Company A, which applied for LC, I140 and 485
I have my I140 approval copy with
RD: Aug2002
Priority date: Feb 2001 (don't know what is Priority date, is this labor filing date?)
AD: Jul2003
I485 is filed concurrently with RD :Jan 2003 and ND:Apr2003.
Approved EAD and AP (Not used yet)
H1B six years ending in Feb2004.
Planning to change to company B .
Questions:
1. Can I get 7th year extension from company, using company A’s I140 approval copy or I485 receipt?
---- Copy of I-485 receipt will work
2. Can I continue my GC with CompanyB ?
---- Read below
3. Can I use 180days rule ?
---- if your I-140 is approved and your I-485 is pending more than 180 days and your employer A has not revoked I-140 then read below:
http://www.murthy.com/UDportis.html
4. Is the 180days count start from RD or ND for I485?
---- From RD
5. Is that 180days rule different for concurrent filing?
http://www.murthy.com/UDportis.html
*** still no final regulations on AC21