Shipments - "Tracking Status" Changes

Hi Everyone,

I may be missing something but I am unable to see why there are several options for Tracking status on the Shipment Doctype if they cannot be changed after submit.

If I create a shipment from a delivery note to a customer.

It starts as “In Progress”, then goes to " Delivered" if all goes well.

Sometimes it’s “Lost” or gets “Returned”

If I can’t change these myself, is there something else that is managing these states?

I’m sure that I’m missing something.

Thanks in advance for your time.