Customer Refund Issue for a Supplier which is a Customer as well

Wanted to have Supplier as a Customer as well.

Entered 'Yes' on profile option - AR: Show Parties without Accounts in DQM.

Created a Supplier, then searched this supplier in Customer form and created Account and Site.

Now entered a receipt, created a Customer Refund. And SURPRISE.

The payment request created without Supplier Number. Why there is no link between the same Customer and Supplier?

Please let me know.

Thanks.

Vikash