I cannot accept with care_candidate, I'm in same boat too. I applied EB3 in 2009 Dec Priority date, then Ported to EB2 with same employer. still with same employer. Wanna use EB3 option now. I can get EAD and travel documents.
After talking to Attorney, here are options suggested.
1 Options 1 - Employer need to provide orginal position.
Apply with Supplement J4 and EB 3 - 485 Approval
2 - Employer EB3 - red0 - 140, current both current same, with premium processing
3 - wait for EB 2 to become priority date
Please let me know, what you guys think