Version 4.3.6

applications/nexus/sources/Invoice/Invoice.php

@@ -1270,6 +1270,7 @@ class _Invoice extends \IPS\Patterns\ActiveRecord
 				if ( $transaction->status === \IPS\nexus\Transaction::STATUS_PART_REFUNDED )
 				{
 					$amountToSubtract = $amountToSubtract->subtract( $transaction->partial_refund->amount );
+					$amountToSubtract = $amountToSubtract->subtract( $transaction->credit->amount );
 				}
 				
 				$amountToPay->amount = $amountToPay->amount->subtract( $amountToSubtract );