to ensure that new subscriptions added will also be automatically discovered, you can setup scheduled discovery and set system property

glide.discovery.cdu.auto_refresh_sub_accounts_and_ldcs = true

General recommendations -

For starters switch to the new UI for discovery schedules - rather than this ui action which we plan to obsolete.

i would recommend the cloud operations workspace app in fact if you are on San Diego.

Move to patterns - i recommend that - gives you best support as we focus on patterns for all new features and improvements.