When Find and match customer orders automatically using delivery reference is selected, upon importing the file, we will use the Delivery Reference provided on the file to find a match for an existing order on your Orders screen. If an exclusive match is found, that is linked to this ticket. Depending on the order settings, if we are required to update the source system with the ticket number, that will occur as well.
This option should be used with extreme caution. Matching based on the reference number can be problematic if you have multiple order sources or sending sites.
We recommend that if you need to bulk print your orders, you download the orders file from the orders screen.
This file contains an additional column as ShipmentId which uniquely identifies that order on the screen.