Any order that hasn't been imported into our system for processing can be edited.
From the Shopify order page, click on the order number.
Click on the appropriate link to make changes to the order. You can change the contents of the order, contact information, or the shipping address.
In the Add product section, enter the name of the product that you want to add to the order, or click Browse to view a list of your store's products and collections. You can also create a custom item for the order by clicking Add custom item.
Note, You can't add a product variant that's already on the order. Instead, edit the item quantity of the variant that’s already on the order by clicking Adjust quantity.
If you want to remove an item, click Remove item.
When you have completed your changes, click the Update order on the right side of the screen to save your changes.