Sellbrite allows you to view the history of inventory changes made to a product.
This is possible using the Inventory Transaction History feature. To view the inventory transaction history for a product, go to the inventory section of your product, and find the link at the bottom.
You will be able to see any shipped orders for your product, as well as all receipts and adjustments made to this inventory location.
Until an order is shipped, ordered items will show as "Reserved", and will not appear in the inventory Transaction History. You can see any and all orders for your products in the orders section of the product.