Form I-140

1) Is there any difference between I-140 revoked by employer - vs - I-140 revoked by USCIS (say for fraud or misrepresentation) with respect to being able to retain the priority date with the new employer ?<br>
2) Changing from Employer A to Employer B - If Employer B files the PERM before I-140 by employer A is revoked by the employer A - would that help retain the PD corresponding I-140 to employer A ? In other words, are there any specific scenarios in this case - where the PD could be retained based on the first I-140 approval ?

1. I am on H-1B with my I-140 approved in EB-3 with priority date is Sep 2013. I have 12+ years experience in the field. I am getting an opportunity from a company. They are ready to start my green card process.
I have just completed my master degree(MCA) from India. Waiting for my degree certificate, which would take a month or two.
<br>2. Can my new employer do the H-1B transfer now based on my BSc degree (Computer Science) and once I get the master degree certificate, can they start the green card process in EB-2? Or do I need to wait for my master degree certificate before the H-1B transfer?

Currently on my H-1B post 6-year based on approval of PERM and I 140 under EB - 2. Would be In the process of switching jobs for some personal / professional reasons very soon.<br>

1) What documents would I need to have with myself - corresponding to PERM and I-140 - so that I can retain my priority date and start another green card process with a potential new employer ?
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2) For the documents above - would I need to have the originals or the photocopies ?

I have a question on EAD validity for the below scenario. <p>
H-1B holder got I140 with Employer A and applied EAD for H-4. H-4 is valid until MM-DD-YYYY 10-29-2018. Now H-1B holder moved to Another Employer B, then at this point he doesn't have Approved I-140. Will EAD which received using Employer A valid until MM-DD-YYYY 10-29-2018? I knew for renewal of current EAD after 10-29-2018, we need approved I-140, but not sure exiting EAD is valid until 10-29-2018 if H-1B holder moved to Employer B.

I have my old Priority date as Dec 2009 in EB-3 and when I changed the company they filed the Labor and I-140 in EB-2 and my old Priority date is not ported on my new I-140 and I see the new I-140 in EB-2 with the Priority Date as Jan 2013. Now with the revised USCIS VISA Bulletin can I apply my I-485 with old PD ( EB-3) and simultaneously to be safer side can I apply I-485 from my wife's side and her PD is July 2010.

Situation -
1. I am working with employer A on L visa.
2. Employer B has filed my future employment based GC under EB2 category. My I-140 is approved. (I have not worked for employer B until now)
3. My I-485 filed by employer B is pending for more than 180 days.
4. I certainly want to join employer B as soon as I get a project prior to getting green card OR when I get my green card.
Questions - (in case point # 4 is not MET and I get an RFE on employment verification letter)
1. During I-1485 adjudication if I get EVL RFE and I decide to respond to it using another job offer from employer C, then - How do I prove that I certainly had intention to join employer B at the time of filing I-140 and I-1485?
How to prove that my employer B also had intentions to hire me on a permanent Job offer at the time of filing I-140 and I-485?
2. If we want to respond to EVL RFE using Employer C's offer then - How do we prove that this offer was extended prior to I-485 adjudication (with joining date after getting green card)?
What should be the offer extended date and
What should be the joining date to comply by AC21?
3. If I respond to this EVL RFE using employer B's job offer letter then - What are the chances of getting "Ability to pay RFE" subsequent to my RFE response using Employer B's offer letter (Not using AC21 at all)? (FYI - as far as I know so far none of the GC applications are denied for "Ability to Pay" RFE for employer B)