Hi jlstysis,
The integration with PirateShip is done with the shipment Tracking plugin, AST PRO comes with the integration with Pirate Ship, and when they update the tracking info in the order notes, AST PRO grabs the info into the shipment tracking meta and fulfill the order. You can explore AST Pro and the Pirate Ship integration here. For setup guidance, refer to their documentation.
For support with the TrackShip, please login to your account on TrackShip and contact the support team.
Thanks.