CHANGING JOB (Labor, I140 Approved) and currently on 3 Year H1 Extension !!!

[peace4u]

I-140 PD substiution

Thanks Srini for your reply.

Now, you state "Yes you have to go through LC and I-140 again but you can retain PD if you reference the old one"

Is your statement valid if any of the following scenarios were to occur:
1) My current employer substitutes my labor for another guy since I left the job
2) My current employer for some reason, decides to cancel the I140 before my new I140 can get approved.

To clarify, will the mere copy/original of the I140 allow me to request the date porting or will USCIS check for the validity of the I140 on that particular date?

-> Lots of good points.. I think both (1) and (2) should be OK - but please consult lawyers and let us also know . My only concern is that whether copy of I-140 approval is necessary or not. My company is refusing to give me a copy of the I-140 approval, saying that they will not do this unless they are legally required to do so (i guess if a lawyer forces them into giving it?).. . Is the copy of the I-140 absolutely required??.