Hello:
 
	i need help before I finish my process. i used to live in new york for many years, I had a green card. I had two daughters born in new york. We went back to argentina, lost my status. Fast forward many years and my daughter all grown up and living in the states wants me to come and live with her.
 
	she filed I-130, was approved and now we are at the consular stage, just paid the fees for aos and IV, we have not started to fill out the application yet, because , I just realized she did not enter my previous Alien registration number and i know that number is a lifetime identifier. My niece, which never lived in the states, had her number assigned at The NVC stage, with her visa. What would you suggest I do so i dont get another number and prevent problems in the future