Company B transfer petition approved. Current Company A H-1B extension in processing. Both filed timely before visa expires.

[ulvishwa]

I work currently for Company A. I got offer from Company B. A files for H-1B extension and B files for H-1B transfer petition. Both are timely filed before my H-1B visa expires. I got H-1B transfer approval for B now before visa expires. But current company A extension petition is still in processing. I wanted to know :

1. If I start working for Company B, will there be any impact on Company B approved transfer petition because of A extension petition as both I suppose will have same I-94 number. 
2. What if my current employer do not withdraw my extension petition even after I join Company B and later A extension gets denied or even approved?

I will appreciate opinion on above situations. Thank you

[JoeF]

The employer is required BY LAW to inform USCIS if you no longer work there. Otherwise they would have to continue paying you. No sane employer would do that, so you can be sure that the H1 will be revoked.

Also, visa is irrelevant. The I-94 would be what matters.

[shekar11#]

On 10/4/2019 at 8:49 AM, ulvishwa said:

I work currently for Company A. I got offer from Company B. A files for H-1B extension and B files for H-1B transfer petition. Both are timely filed before my H-1B visa expires. I got H-1B transfer approval for B now before visa expires. But current company A extension petition is still in processing. I wanted to know :

1. If I start working for Company B, will there be any impact on Company B approved transfer petition because of A extension petition as both I suppose will have same I-94 number. 
2. What if my current employer do not withdraw my extension petition even after I join Company B and later A extension gets denied or even approved?

I will appreciate opinion on above situations. Thank you

1. No impact on company B petition.

2. Does not matter If you resigned with A then it is his responsibility to inform USCIS.