Index: modules/in-commerce/units/orders/orders_item.php
===================================================================
--- modules/in-commerce/units/orders/orders_item.php
+++ modules/in-commerce/units/orders/orders_item.php
@@ -32,7 +32,7 @@
 
 			$options = $this->GetFieldOptions('PaymentCCExpDate');
 
-			if ( $this->GetDirtyField($options['month_field']) || $this->GetDirtyField($options['year_field']) ) {
+			if ( isset($hash[$options['month_field']]) || isset($hash[$options['year_field']]) ) {
 				$this->SetDirtyField('PaymentCCExpDate', 0);
 				$this->SetField('PaymentCCExpDate', 0);
 			}