Show discounted price in subtotal

Hi, thanks for this plugin that saves us a lot of precious time.

I have an issue with the invoices of orders that include a discount coupon.
The subtotal on the invoice shows the original, non discounted, price of each item and after de subtotal there is a Discount line.
The math is correct, but this layout is very confusing for customs when we ship international.
The ideal thing would be to have each item show the discounted price so that it matches the declared value of the customs form.
I can’t find an option to do that in the settings, does it exist?

Thank you for your assistance,
Alessio