I am currently on EB-3. I have a company (say Company A) which is willing to file for my GC in EB-2 under 'Future Employment'. Do I or the 'company A' need to be aware of something on this front?

Below are questions I have on the H-1B Amendment and H-1B transfer being filed almost at the same time with little gap with USCIS for the same person. The H-1B Amendment is in light of the new H-1B regulation that has been mandated by USCIS when there is a significant change in the Job Location of the beneficiary from the address mentioned in the initial Petition from the employer which was approved initially.<p>
1. Does the USCIS Last action rule apply in case of the below 2 being applied almost at the same time for the same beneficiary?<br>
a) H-1B Amendment with Current Employer<br>
b) H-1B Transfer to New employer while H1B Amendment is pending with Current Employer.<br>
2. If the answer for the above is 'Yes', then incase the H-1B Amendment Approval comes after the H-1B Transfer would the H-1B transfer to the new employer that was approved earlier be automatically nullified?<br>
3. If the answer for #2 above is 'Yes' Is there any way to request USCIS to consider the H-1B Transfer approval to new employer as the primary incase that get approved earlier and avoid the H-1B amendment to dictate the latest H-1B for a given employer? (I believe we can request USCIS to withdraw/cancel the Amendment but is this something that the new employer/employee can do or only the existing employer who was filed for H-1B amendment has the authority to request any cancellation/withdrawal of the H-1B amendment?)<br>
4. Also does the current suspension of H-1B premium processing apply even for the H-1B transfers (with a new extension for 3 Years) or is it only for new H-1B extensions of Petitions from the current employer?

FAQ 1. I am presently in Canada on a work permit and want to apply for H-4 EAD. My husband has a valid H-1 and an approved green card application . So we are eligible for applying. My question is that can I visit US for 2-3 days, mail my application and then leave the country? Do I need to be in the US when the USICS receives my application? Or I can immediately leave after mailing the application? <p>

FAQ 2. My spouse's PERM approved & his employer is still gathering required documents to file I-140. It is still within 180 days limit. Can I apply for H-4 EAD with my spouse approved PERM copy and other documents required ( eligible under beyond 6 years extension of H-1 & PERM pending 365 days) ? Or do I have to wait until his I-140 filed ?