This lets you export the configuration of the SiteManager, and save it into a file on your computer.
This lets you import a configuration file from your computer into the SiteManager.
Alternatively, if you click on the [XML icon], a text field is displayed where you can paste and edit a full or partial configuration to be imported. Once you submit the data, there is no difference in importing a configuration from a file or using the text field.
After the import you may need to reboot the SiteManager to activate the imported configuration.