Risks of filing I-140 and I-485 concurrently

[K2M]

My company has did I-140 EB-1 Multinational manager category. I am requesting them to file I -485 concurrently. But they are suggesting to wait for I-140 approval due to recent high scrutiny.  I am not able to convince my employer’s immigration attorney/law firm. I understand the I-485 will not be approved if I-140 is not approved and we lose money. Below are my queries
 
1.      What are the other risks in filing I-140 and I-485 concurrently and later I-140 denied.  Do we know, if this will impact future I-485 processing or any other immigration/non-immigrant visa processing. 
2.    Can I file the I-485 via a different immigration law firm. If so, what is the process. 

Thanks in advance.

 

[pontevecchio]

1. No future impact

2. If your employer does not want you to do so, they may withdraw the I-140 if you try to file AOS with another lawyer.

[JoeF]

You don't even need to have another lawyer. The I-485 is your application, you can file it without any lawyer.

Of course, unless the I-140 has been approved for 180 days the employer can always revoke it. The I-140 IS the employer's petition.