Important Concern about porting PD from one 140 to the other

[pururwa]

I need a final clarification on this please:

I have an approved I-140 with comp. A, I work with comp. B now and would like to apply for GC from B porting the PD of my previous I-140 from A. Now if A revokes that I-140 before I apply from B, can I still port the PD from A's I-140 ?
Could the revokation of A's 140 affect me in anyway ?

Thanks
-P