H1B Extension by New employer with Approved I140 within 6 months

[MirchiCA]

Hi Guys,

Thanks in advance. I do have a unique situation.

I completed 5.5 years of H1B.

Employer A (current) filed my I140 and approved a month back. Still within 6 months of approval.

Employer B(new) filed H1B transfer without I140 details (as it was not filed then). And transfer is now approved.

Employer A suggested that my I140 will not be revoked in case if I switch to Employer B. And Employer B also promised to file new I140 after joining.

Questions:

1. Can I use my I140 filed with Employer A for H1B extension at Employer B ?

2.  If Employer A revokes I140, Should I receive new I140 approval within next 6 months to be able to apply for extension from Employer B ?