Help with tax code on payment document

I have a question regarding the tax code that is populated when a payment document is created via F110.

When I create a payment request using F-59, the tax code in the payment request document is defaulted from the original invoice.

When I use F110 to make a payment for this payment request, the payment document created also has the tax code populated.

However, payment documents created for normal invoices do not have the tax code populated.

Is there a way to stop the tax code from going into the payment document for payment requests?

Thanks in advance

Chee