You could export the job you want at the end, import it, and rename the old database into the new name.
But since you filed this for a feature, not the workaround, the feature is not there yet but has been asked.
Allow to change backup list order
Re-ordering Backup Jobs on Duplicati Landing Page which details the export/import workaround. That’s responding in part to your post, but I can’t tell whether it didn’t help your need or if you hadn’t tried it yet…