Marketpress doesn't pass billing information to payment gateway??

I’m investigating MarketPress again, and while trying out the 2Checkout demo account, it seems that MarketPress isn’t passing the billing information that the customer has already entered on to 2Checkout, which means that the customer must enter all the information in again to finish the payment process. Is there a setting that needs to be enabled to have the billing information passed on to the payment gateway so that the information doesn’t need to be reentered by the customer?