The Loader MBean can detect changes to the configuration file, unload the existing MBeans, and instantiate new MBeans from the file. Changes to MBeans are not automatically detected nor are the MBeans automatically/periodically saved at any time.

Rather, if an administrator wants to save configuration changes they have made so they extend beyond the life span of the server JVM, they can use the save operation at their discretion. For additional information, see Using the Loader MBean to Persist Configuration Changes.