I140 approved Queries about changing employers, effect on GC process etc

I have a few questions based on if an H1B consultant has I140 approved,

1) Can they change employers?



2) How would that impact the GC process?



3) Would the old employer cancel the approved I140?



4) Would the new employer start the whole process from scratch?



Thanks.
  1. Can they change employers?

    Yes, but you need to start the process over again but your priority date will be the date that your PERM got approved first.

    1. How would that impact the GC process?

    restarted process

    1. Would the old employer cancel the approved I140?

    does not matter

    1. Would the new employer start the whole process from scratch?

    Yes