Save on Automatic Sync Option

Please see K14624: Configuring the Automatic Sync feature to save the configuration on the remote devices:

"When the Automatic Sync feature is enabled for a device group, the BIG-IP system automatically synchronizes configuration changes, but does not save the changes to the configuration files on each device in the device group."

"In some cases, you might want to configure the Automatic Sync feature to update the running configuration and save the configuration to the configuration files on each device in the sync group. Depending on your BIG-IP version, you can do this by setting the save-on-auto-sync option to true for the Root trust domain or device group."