To update the shipping status of your orders in Unleashed, add each of the carriers you have set up in DEC (DEC > Settings > Couriers) into Unleashed settings.
In Unleashed go to Settings > System and add the names of the carriers.
What status will the order be marked as after the update?
Orders will be set to 'Complete'
Can you process the orders as partial shipments?
Partial shipments are currently not supported by Unleashed
Can you process the orders as merged?
Merged order writeback is currently not supported