Update track & trace without change status.

[ParcelPro]

Hi,

We do the following API request (example) to /admin/api/2020-01/orders/<order id>/fulfillments.json
{"fulfillment":{"location_id":"123546","tracking_number":"ABCD12345","tracking_urls":["https://mytrackingurl"],"notify_customer":false,"tracking_company":"Carrier"}}

For some reason the order in shopify is marked as fulfilled even if we don't call the completed endpoint.
I've read this "Fulfill all line items for an order and send the shipping confirmation email. Not specifying line item IDs causes all unfulfilled and partially fulfilled line items for the order to be fulfilled."
The solution is to specify line items? Is there any possibility without the line items? We have no information about which lines should be fulfilled and which not.

Main question:
How can we only update the track and trace info without changing the fulfillment_status through the API?

Kind regards

[ParcelPro]

It makes no difference in specifying the line items.
Same situation: 'fulfillment_status' changed to 'fulfilled'