change of address help!!!! COA012007-06-23 21:56:47

I changed our address online for my family.
For the Form AR-11, I got different confirmation numbers for me,my wife, my son and my daughter.
However, for the pending I-485s, my wife, my son and I got the same confirmation number. But my daughter got a different confirmation number.
Anyone had this experience?
Thank you very much.