Full-Time Opportunity - Need Help

[dkg2018]

Hi, I need help in steps in processing my Full time Opportunity in a safe way. Below are my details

Employer A

Year Entered - 2007

Priority Date - Sep 2012

I-140 Cleared

 

I got a full time opportunity with Employer B. It doesn't have any emplyoee-vendor relationship. I will working in their projects directly. 

My Questions

1) When should I change my H1B / Employer ?

               - After successful approval of H1B in Employer B ?

2) To start the GC process with Employer B, do I have to wait for 1 year. ~ 1 year closely for Ad, PERM application and I-140.

3) Can Employer B start the Ad, Perm process and then can I transfer my H1B to them ?

4) Can Employer B start the PERM process, even before I start employment with them ?

Under Trump's new rule, I am little bit worried, if I mess up something, I will lose my Priority Date.

 

Please, advise, if my there are any safe routes.

 

Thanks,

 

[pontevecchio]

The existing PD remains available to you for a new GC filing.

[dkg2018]

thanks. But, which one is the easiest and safe way for proper transition?

[pontevecchio]

Discuss the matter with B .