How to disregard AR discount when receipt amount matches transaction amount

Summary:

Hello,

We have enabled AR discounts and if the customer pays with in due date, he is eligible for discounts.

System is calculating the discount based on receipt date and due date and when the transaction is applied, automatically assigning the discount amount And Transaction amount is becoming negative even though transaction and receipt amount matches.

But in our case some times customers is not availing the discount and we want to apply full receipt amount to transaction and transaction amount should become zero. So whenever Receipt amount is same as transaction amount, discount should become zero automatically. Is there any setup/lookup to achieve this