MLS Import Plugin has a specific settings area for administrative tools, which you don’t need to access or use while the plugin is active and working.
The “Tools” configuration area helps to export the plugin configuration to a test domain or import options from another domain.
“Export” and “Import” are useful to the MLS Import support team only when you ask for help to switch domains or themes (*please see the supported themes list).
“Clear Plugin Cached Data” is an option that manages the plugin cache data, not the theme cache data.
It is useful to the MLS Import Development when assisting you with import tests, and tracking Update Logs.