I140 Revoke less than 180 Days case

[rnkeane]

I have approved I140 petition from external employer(Y) and approval not older than 180 days, i am working with employer (X) on H1B petition and completing 6 yrs term, if employer X(existing employer) file extension request beyond 6 years using I140 approved from employer(Y) and H1B extension got approved for 3 years than what will happen on Approved H1b extension request if employer(Y) revoke approved I140.

Am i still able to work with Employer(X) on H1b extension?