Changes to Agent Config

Wondering if someone can help shine some light...

I have one major config that is deployed to all my clients.  I recently made changes to the schedules of Inventory, Policy, and Vulnerabilities, as well as an update to the Agent Watcher settings.  Do I need to push out a new client (uninstall/reinstall), or will a scheduled agent update function be sufficient?

If the scheduled agent update is enough, how can I tell which clients have the new config?

I've checked the Agent Configuration Date, but it never updates.

Thanks for any help.

Chris