Using Simple Bundles with Shipstation
To view individual SKUs as line items in Shipstation, you need to go into your Shipstation admin to update modified Shopify orders.
In your Shipstation admin, click the Import button to pull new order data from Shopify. For more information, view the Shipstation help doc under the section Update modified Shopify orders.
You'll see your bundle SKU along with your individual bundled SKUs in your order details.