I'm in my 6th year of H1B and my current company is working on my PERM application . My 6th year of H1 ends in Nov 2019. I have approved I140 from company B for which i had never worked. Company B is good to use this I140 for my extension.
As a Note, I'm going to stay with my current company. I had only filed with company B as the timelines are very tight.
Shall i use company B's I140 to file extension with my current company?
What's the next step after this extension , when should i merge company B's I140 with my current company.