I am currently working for employer 'A' ,got my I140 approved in February 2018 and I am on 4th year of my H1b visa (valid till Sep 2020). Employer 'A' has some financial issues and may file bankruptcy or close its business some time later this year. Now I got an offer from Employer B so,planning to transfer my H1B to employer 'B' based on approved I140 from employer 'A' till March,2021. now my question is
1)If employer 'A' closes its business or revokes I140 after 180 days of my I140 approval,can my Employer 'B' extend H1B based on employer 'A' I140 approval beyond 6 years?
2) If employer 'A' closes its business or revokes before 180 days of my I140 approval, Will my transferred H1B validity (which is till Mar 2021) impact?