This allows you to import or export your plugin configuration settings in case you have to change or activate/deactivate your plugin on another instance. This also gives you the ability to download and maintain the configuration file for your ideal configurations.
This would be useful in cases when:
Upgrading from free version to paid version of the plugin .
Migrating between different environments of your site.
Upgrading to the latest version of the free/paid plugin.
This option can be found under the Service Provider Setup tab.