What is the best way to restore jobs after OS reinstall?

Can I export backup jobs from the command line? suggested a third-party client that talks to Duplicati server which uses both the server and job databases to merge the details needed for jobs to run or to be exported.

Export backups

The export command enables building backup configuration files through the CLI.

Integration between command line and web interface #2693

The commandline interface is intentionally separate from the server.