Mist-Managed SRX Configuration Rollback Behavior
When the configuration is pushed from Mist, it is committed for 10 minutes. If the device loses connectivity to the Mist cloud, the configuration on the SRX CLI will be rolled back after 10 minutes.
However, any changes made on the Mist GUI must be reverted manually, as there is no automatic rollback for GUI changes.
The same behavior applies in an HA setup as well.