PERM approved, impact of promotion on I140

I am in a scenario where my PERM has been approved in the green card process and the I-140 is going to be applied. But I might get promoted in the next 1 month. I have two questions here:

As my title changes will I have to apply for the PERM again?If i apply for my I140 now will I have to apply it again after the title changes?It would be very helpful if anybody who knows about this type of an case can comment.