Each Invoice should be dated

Each Invoice should be dated automatically and at the moment the only way to get them dated is to complete the despatch first. That is OK if you are buying the shipping through Storefeeder, but for Seller Fulfilled Prime on Amazon you have to buy your shipping on Amazon. The Storefeeder system does not update quickly enough to get the invoices done in time for Royal Mail collection. To get dated invoices you have to manually change every Amazon order on Storefeeder to despatched. This is very time consuming and totally impossible at busy times like Christmas. But it is actually a legal requirement that vat invoices are dated and without going through all this manual process of changing the orders to despatched you can't get a dated invoice.