AC21 AOS Portability

Come to US on green card EB2 (future employment base GC) consular processing. At the time of green card consular processing interview my employer offer letter mentioned my job title as “Programmer Analyst”. My employer is a consulting company and after coming to US on GC, I got my first contract project at client location (while full time with my GC sponsoring employer) with job tilte as “Architect/Project Manager”. But is it having similar job duties as my GC employment offer letter? My question is at the time of US citizenship interview will it be problem because of different job tittle between (GC offer letter and actual contact project at the client site), but similar job duties?

I am currently working on a GC-EAD. The I-140 was approved for title "application developer (oracle financials)" soc code 15-15051. I would like to make a lateral career change from developer to functional analyst. It will involve the same ERP software, I have picked up the skills to perform the new role while performing the previous job i.e it will be a lateral move (There are skills overlap between the two roles). Do you see any issues with doing this?

I am considering working contract jobs while employed by a self-owned company. I am on GC-Ead (pending AOS). Considering the mandatory filing of supplement J forms in case of job change. Is there potential for rejection? Considering that it will be a brand new company and no turnover at the time of filing supplement J.

My H1B (6 years) was from 10/1/2004 - 9/30/2010 from 5 different companies.
Company A - PD(EB3) - Jun 19, 2007, I-140 applied on July 9, 2007, I-485 filed July 17, 2007 - got laid off Oct 31, 2008. - I-140 approved on Dec 29, 2008.
Moved to Canada in July 2012 and became Canadian Citizen in Apr 2017. I have been keeping Advance Parole active by visiting the USA every year.
Now I want to add my family in Canada(wife(Indian Citizen with USA visitors visa) and kid(Canadian Citizen)). Do you recommend AOS for myself and Consular Processing for my family?

1. In respect to the above, Case: I-485 pending since 4 years. Did not renew H1B as using EAD/AP. Can a primary applicant on Green card have multiple jobs on EAD ? More than one W2's simultaneous.<br>
Employer A (original) - Filed Green Card<br>
Employer B (temporary) - New Employer<br>
Work for both Employer A & Employer B.<br>
2. Is it important to have a continued pay stub from Employer A (original company)? Can I work for Employer B for few months and then work back for Employer A? Will there be any problem during final Adjudication?

Do the 3 years spent in residency training in an HPSA/MUA area be counted towards the five years required for NIW? The residency training (3 years) and subsequent job (2 years) were on H1B visa in two different HPSA/MUA areas but not processed through NIW route. Can the NIW petition be filed now retrospectively for those years already worked in underserved areas? My current GC sponsoring job is in a University teaching hospital (job designation Assistant Professor) but obviously also involves treating patients. The PERM prevailing wage category was teacher/ Professor but job description included patient care. Can the job be changed to that involving only patient care (no teaching) and still be considered same/ similar? How about a job (with patient care only & no teaching) in a private practice (as opposed to hospital employee)?

I received my 3-year extension post 6 years based on approved I-140 (sponsored by employer A). I am in the 7th year of H1B and have a valid visa until 2019. I have an offer from employer B. I am told by employer B that they are going to do H1B portability and extension using my approved I-140 from my previous employer. Since the premium processing of H1B is going to be suspended starting April 3rd, my new employer B wants me to join them based on the receipt notice of the H1B transfer. I am also told that the risk I have in case of denial is I would have to leave the US and re-apply for an H1B petition from my home country. From my understanding, one can always go back to their previous employer in case of rejection of H1 transfer?

My EB2 priority date is June 2009. I filed for my I 485 in 2012 and since 2013 I have EAD and have been maintaining H1b status.
In 2014 I changed my job from the original employer who started my GC process (with whom I have I 140).
I sent AC21 when in 2016 I got the standard RFE to produce medical records and employment proof (since then the priority date had retrogressed again), and also have H-1B with my new employer. I have not started the new GC file with a new employer.
Should I file supplement J now, proactively, or should I wait for another RFE from USCIS when my priority date becomes current in the future, to file for supplement J?