Every kps install defines grafana dashboards for all farms, even ones that are not present (see values.yaml-tpl of kps).
To modify the custom dashboards, you must download json of the dashboard and put it into respective file on static.catchmedia.com webserver:
ops@main-arie:/tmp$ vi /tmp/grafana-clix.json ops@main-arie:/tmp$ scp grafana-clix.json root@10.3.1.24:/opt/static/www #delete the grafana pod on the relevant cluster, so it reloads custom dashboards root@k8pc1:~# kudel pod -n mon -l app.kubernetes.io/name=grafana