Csh1970

Don't worry about old USCIS numbers because you've crossed that bridge already. Use the new immigrant fee receipt numbers to track the progress/production of your green card going forward.

If you mean the original numbers for your kids' petitions, USCIS won't reuse those because your kids' cases are already closed.  The petitions were approved and they already got their visas.  Green card production would be a new case with USCIS, so the immigrant fee payment would generate new receipt numbers.
 

Hello fellow VJers!
We received the interview letter today that my stepdaughter is scheduled for an interview on May 11 in Santo Domingo. I'm a USC. She is age 5. We are getting her to medicals done first thing Monday but does she need to also get her Biometrics at VAC? We really need to know something rather quickly so as to be prepared. 3 weeks does not give us much time but we are overjoyed. What do we need to be prepared for the interview since she is five years old?
The A# is at the bottom of the interview notice. Is this common for her to get an A# before an interview?