小白兔: I485 beneficiary question

I filed I140 (EB1a) a couple of years ago and got approved last year. Also I filed I485 concurrently for myself and for my wife. Both are still pending. A notice that I got yesterday from VSC regarding my I485 shows the beneficiary on my I485 is me, not my wife. I thought my wife's petition is based on mine so the beneficiary on my I485 should be my wife. Did VSC make a mistake or my understanding has been wrong?

Please help.

Thanks,