Guys, if someone is i-140 approved form company A and he wants to switch company B , can company B pick his GC process from approved i-140 phase from previous employer or it has to started all over again from scratch, any idea ? any body knows about 180 days rule . TIA

( company A wants at least one year commitment after GC which causes significant financial loss, is the reason to move )

Sajha have omniscient persons and may answer you. I found this article by an a low office may be helpful.

Here is the link.
https://www.rnlawgroup.com/changing-employers-on-h-1b-after-i-140-approval/