It's impossible to export the file types from WorldServer to our desktop in WS v.11.1.1.4090. Not sure the new versions of WS do support that functionality now.
Currently you can import File Type settings from Studio into WorldServer, and you can also export them but only in WorldServer's own export format. We will add the ability to export the file type settings in Studio's native .sdlftsettings format in a future release.
It's impossible to export the file types from WorldServer to our desktop in WS v.11.1.1.4090. Not sure the new versions of WS do support that functionality now.