Hi @r-goswami , Good Day! 

This looks like an issue with the web UI interface. Could you please try the RESET API call to edit the job settings if this is a blocker for you? 

Documents to refer to call the RESET API: https://docs.databricks.com/api/workspace/jobs/reset

Please let me know if this helps and leave a like if this information is useful, followups are appreciated.
Kudos
Ayushi