Have you asked the selling dealer about the information? Does the paper include a VIN # that identifies your vehicle?
The warranty does not help or hurt in this case unless something goes amiss.
Some to most states require selling dealers or even private sellers sometimes to devulge the information. If is a state specific requirement you may have a smoking gun. Look up your lemon laws for your state if any.
Between you finding this information and going to the AG office what has happened? Have you contacted selling dealer etc?