Starts with P and the other controller responses are the expected responses from a technical operator who cant think outside their own "square".
The whole concept of airways clearances is rendered invalid or at least weak by the "then via Flight Planned route".
Controllers are more than happy forthis weakness in the system to exist because it saves them talking time.
Browse ATSB website for a serious incident between a corporate jet and an RPT a few years ago if you dont believe me.
Sorry about post japanese keyboard