Place the downloaded file in your (MQInstall)\resources\EasyFind directory.
Issue an /easyfind reload command as needed. The override will automatically pull the updated connections the next time you log in.
Side Note: MQ2EasyFind must be configured to "Ignore Zone Connection Data" to function on emu servers (at least, every one that I have played on). Please check your plugin settings (
/mqsettings
> plugins > Easyfind is a convenient way to do so).