Priority date related question

[SaiRam2012]

I have PERM(labour) approved from Employer A. But, I have not yet applied for i-140 with employer A. The reason is, I want to move to employer B. My question is: Once my PERM and I-140 with employer B are approved, can I port employer A`s perm date (priority date)?

[pontevecchio]

You can only port the PD from A if the I-140 from A is approved first.

[JoeF]

No. The PD from employer A would be gone forever, unless you have an approved I-140 from employer A.