Multiple I-140 petitions from multiple employers

[Gc2013]

Hi,

I have an approved I140 from Employer A. PD - June 2013. 

I have switched to Employer B who will file for a new PERM and then port my PD.

Employer A will not revoke I140 in case I wish to join back.

I will have 2 approved I140.

1. Will the I140 from Employer A cancel automatically after PD port? I would like to keep both I140 active in case I decide to go back to my old employer. Is that possible.

2. If in futur, after i-140 approval from B, I quit company B and join to a new company C, company B will withdraw my approved i-140. So in that case, will my pd 2013 be lost? If company B revokes 140, does that mean my i-140 from A will also be nullified, as i port the PD from A? 

[pontevecchio]

1. No. They are mutually exclusive.

2. You retain the PD in the absence of demonstrable fraud.

Employer seems to be a model employer keeping your job and options open for you.