Follow ShipStation split orders and label changes

When ShipStation splits an order, Endless imports the child orders’ shipments under the original fulfillment, with their tracking numbers and quantities. Get Shipment can retrieve these shipments together, including shipments from earlier splits.

Replacement labels update the existing shipment when Endless can match them safely. An additional label for units that already shipped adds its tracking number to the shipment instead of recording the units twice. Partial shipments stay separate, and labels that cannot be matched clearly remain for review.