H1 ->H4 ->H1 transfer after 6 years with approved I-140 from old employer

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Hello All,

I was employed by company A on H1B visa until October 2014. They filed for my GC and I have an approved I-140. I was laid off in October 2014 and I decided to switch to H4 visa. In October 2016, I started a new job with employer B on H4-EAD. My H1B visa is valid until March...