$order_number = $refund->order_number if $refund->can('order_number');
+ # change this to just use $cust_pay->delete_cust_bill_pay?
while ( $cust_pay && $cust_pay->unapplied < $amount ) {
my @cust_bill_pay = $cust_pay->cust_bill_pay;
last unless @cust_bill_pay;