If you have chosen to automatically upload Magento Invoices for Magento orders, there are extra options to make the management of invoices more convenient for you.

You can upload a custom logo to the printed version of Magento Invoices. To do it, go to System > Configuration > Sales > Invoice and Packing Slip Design.

If you need to resend Magento Invoice/Credit Memo, you have two options:

• For an individual order. You can do it manually under Amazon > Sales > Amazon Order Details > Payment & Invoicing section.
• For multiple orders. You can filter your orders out with No Invoice/Credit Memo Sent option. Then apply Resend Invoice/Credit Memo action.