To export only Shopify orders that contain a specific product, you can filter by the fields that start with "List of Lineitem" under the Custom Filters section of the Data Settings.

These fields combine the values of all the line items in the order separated by a comma, so this allows you to filter the entire order instead of individual line item rows.

For example, to only export orders that contain a product/variant with the SKU "ABCDEF", you would add this filter:

• List of Lineitem SKUs contains ABCDEF