If you have accounts set up for discount, but customer does not take discount, can Oracle apply the

Our standard terms allow discount.   If the customer pays within the discount period, but does not deduct discount, Oracle calculates the discount.   Each invoice has to be adjusted back to the original amount of the invoice in order to process payment.   Is there a way that Oracle can determine that the customer hasn't taken the discount (full amount of invoice) and accept this payment and not calculate the discount?   Or do you know a quick way to revert back to the original invoice amount without having to remove the discount for each invoice?