To upgrade Trilio it is necessary to uninstall the old version of Trilio and install the new version.
This is done in a few easy steps.
Upload the qcow2 image of the new Trilio Appliance
(It might be necessary to verify the connection of the ovirt-imageio-proxy again)
Import the workload from the Web UI of the Appliance once Trilio Appliance is configured
During configuration check the box for workload import. This will automatically load all workloads hosted on the backup target into the fresh configured Trilio Appliance.