US Immigration from United Kingdom

My partner (US Citizen) and I (U.K. Citizen) currently living in the U.K. and are unmarried. Our long term goal is to move to the USA; however, we are considering a move to Australia after filing the I-130 document post marriage. The plan is to marry in the U.K. and then move to Australia in August 2025 and stay for one year, leaving August 2026.

Can the I-130 be filed in the U.K. in say, March 2025, and the application continued after emigrating to Australia? Additionally, how long can we wait after the I-130 is approved before starting the I-485 petition? The reason for this would be that we want to have a full year in Australia and are trying to determine a rough timeline.

Does NBI have to be current and valid at visa interview stage?

What if NBI is valid at NVC to become DQ'd but expires before interview?

Hi guys, I recently came into the country on the 17th of February to activate green card. Is it okay to travel back to England where I was before I got the IR1, without getting the physical green card or SSN issued. Just don t want to be queried at immigration. Please advice.

My fiance and I filed back in June for a K-1 and just got our I-129F approved a week back. Now in the process of DQ but I just have a slight worry. My fiance is in the UK, and I joined him in November to complete my Masters in the UK. I hold a 1-year student visa in the UK, and my program ends in September. But that means that we have been virtually living together for the past 3 months. My Affidavit of Support is going to be joint with my parents since I'm domiciled under them and paid the most recent taxes as their dependant. We haven't gotten married, and our plan was to have our ceremony in the US right after my course ended. Would the Embassy say something about this?