If you add/remove lights from your LIFX setup, or even change their names. Please follow the below process to update your Fibaro controller.

Step 1.

From the Network Devices tab, click the Settings icon under the LIFX logo.

Step 2.From this settings page, you can choose to Disable the plugin, which will remove the devices from the automationbridge, and will also remove the connected devices from your Fibaro Controller.

You can also choose to 'Sync Lights', this process will connect to the LIFX Cloud, adding in any new lights to your Fibaro controller, and also updating names (if you have changed the name of the light in the LIFX app)