How can we adjust an invoice amount after the invoice is created? For example, when customer's use 2% discount for terms or have other deductions (fees), I am unable to change the invoice amount to receive the amount they actually paid. Do the orders...

We are using a wholesale app but not able to remove 2% discounts or other deductions when invoices are paid. For example, when customer's pay early or have other deductions I am unable to change the invoice amount to receive the amount they actually ...