Managed to get the DetailSKU detail to display on the customer order details page.
The problem was the binding, I originally entered
<?php echo $eCart1->DisplayInfo("SKU"); ?> but should have been
<?php echo $eCart1->DisplayInfo("Code"); ?>
Then tried using the same logic to add the product description to the customer order details page. I created a new column DetailDescription in the ordersdetails table and added the new fields for description in the customer order details page and added the binding and it seems to work ok.
Can you confirm this is the correct solution and if so, close the support ticket. Thanks