Billing Terms & Discounts

[Daniel Rucci]

I have a question about the billing terms for invoices.
First i'm using gnucash-2.2.2

I'm playing around with the discount (of type Days) and invoices.. I 
tried setting a discount, and then processing a payment within the 
discount period.

So for a 10% discount on a $100 payment I enter $90 as the amount of the 
payment.
My customer report & invoice report still say the customer owes 10%, 
even though the posted invoices billing terms state they should receive 
a 10% discount.
   
How is this supposed to work?

Thanks,
    Dan