If you have received money back from a creditor and you need to return it back to owner all you need to do is....
Find the invoice number that you created against the owner
Once you have this number go to Transaction History
Enter in the invoice number
Select the invoice right click and reverse (this will then apply the money back to the owner)
Now go to Transactions - Drop down Payment creditor
Select the creditor you have received the money from
In the list of payments,you will see the negative payment from your reversal Invoice.
Select this one only(if there are multiple invoices in the list just ignore them)
Now go to reconciliation and present down this payment creditor you have just reversed as this acts as the Receipt creditor.
If you have any troubles please get in touch by submitting a request into support