Thanks! I was concerned about using these on a Plesk managed fail2ban instance since we don't know if it keeps its own version of the config in the psa db or elsewhere to facilitate rebuilding it if needed, but the commands on that page lead me to a kb article that had the relevant Plesk commands:
How to manage Fail2Ban and its jails in Plesk for Linux - Support Cases - Plesk Knowledge Base
www.plesk.com
plesk bin ip_ban...