vendorpayment: netting of closing invce with down payment no customer scena

Hello,

I am doing the following.

create down payment F-48:

D 29 A vendor 100 EUR

C 50 bank account 100 EUR

create vendor invoice FB60:

D 40 cost account 250 EUR

C 31 vendor 250 EUR

clear down payment F-54

D 26 vendor 100 EUR

C 39 A vendor 100 EUR

If I do a payment run I see an incoming payment and an outgoing payment. for both a separate payment method is required (1 for outgoing, 1 for incoming).

I would like that instead of having an incoming payment and an outgoing payment, I would like to have only an outgoing payment (for which I only need 1 payment method).

How to accomplish this?

Regards

Arjan