A customer's delivery method is set to contact's email on the customer record.  You change the contact's email address on a customer order (click on the Zoom button), and then ship and invoice the order.  The email address change is passed through to the OE invoice.  When you email that invoice (choose the print destination = customer), the email address used is the one set up on the customer record.

Does anyone think that the email address entered on the order should be used instead?  Am I missing something?

Thanks.