thank you both for answers, can you please help me understand one last thing.
i just created a USCIS online account use their tool to change address.
i only entered:
A number,
Case number (uscis fee generated a case number, not the NVC number)
and new address.
it did not ask me my current address, it only asked me my name, date of birth, new address and A-number.
is this correct? is there another place/tool for this. (i am cr1 visa holder, waiting for green card)
in the past, people said, they used to enter their current (old) and new address.
i hope i didn't make a mistake.