Pay on Receipt to create invoice for qty delivered.

 Hi All,
I have a below scenarios

I am raising PO with Match option "Receipt" with 4 way matching

My PO qty i.e Order qty is 10
My Receipt qty is 5
Since it is 4 way, i inspect the qty and I Accept and deliver 4 qty and reject 1 qty.

Now, i run pay on receipt which creates AP Invoice automatically. However the invoice is created for the receipt qty not the delivered qty i.e in the above case invoice is for 5 qty where as Delivered qty is 4.

The Setup for PO close point is "Delivered" at Purchasing option level.

Can some share inputs on how to create AP invoice for Delivered Qty.