refile

My PERM was filed in May 2023, but my employer recently closed the local office where I was based. Fortunately, my team and I have received an exception to work remotely. However, my company's immigration department says they will need to refile the PERM due to this change. My questions are...

I have I140 approved since October 2016. If i would change my employer under the same skills in Nov,2017 , do they still need to process my i140 again. The attorney with new employer says you dont have to start the Green Card processing again or file a i140. He says we will just keep renewing...