This tab displays the customers ship-to information and contacts. They are added to the order when it is first created. Therefore if the customers address and contact information changes while an order exists, the order will no longer have the correct information. This includes the customers email addresses that will be used when sending orders and invoices to the customer. There is a button in customer edit that the user can click that will update any open sales orders with the customers new information.
These fields are editable and can be overridden by the user.