DMV procedure when you trade in? (California only)

[tomato]

I traded in my old car at the Toyota dealership when I bought my Yaris, and when I turned the pink slip over to them, the dealership told me they would fill out the necessary paperwork with the DMV so I wouldn't have to file a release of liability form on my own for change of ownership on my old car. In fact, I'm pretty sure they gave me some kind of piece of paper saying they were taking over the Honda (can't find it now, but I'll look later tonight to be sure).

Yet, the DMV just sent me my notice of registration for the old car (along with the pink slip for the new car!).

Does anyone know if the DMV expects you to file your own NRL when you trade in a car at a dealership in California or if the delaership usually does that?

At the time I traded in my car, the budget was pretty tight in California and they were reducing DMV hours, so who knows, maybe something fell through the cracks. Or maybe I messed up and didn't file what I was supposed to file?

Thanks for any help.

PS. I intend to call the DMV tomorrow, papers on hand, but I thought I'd ask around first.