It would be useful to be able to highlight an invoice - would help when waiting for a SagePay payment. Or when needing to keep an eye on an existing order for any reason. All our orders are pre-paid and drop shipped so kashflow reports don't help. And if an online payment is made by Sagepay if this could be automatically highlighted when paid by the customer it would help. At present, if a customer pays using the online button the paid invoice doesn't look any different from any other invoices so it's easy to miss the payment and not order the products for the customer.