Answer keys from the old edition will not match the new edition page-for-page. Always check the edition shown on the cover (look for "aktualisierte Ausgabe" or "Neuausgabe").
So, the completed dialogue would be:
You typically won't find a full answer key printed in the back of the Kursbuch itself—that’s usually reserved for the Arbeitsbuch. For the Kursbuch: menschen a11 kursbuch answers new
Consequently, the demand for "menschen a11 kursbuch answers new" remains high, but supply is legally restricted. Answer keys from the old edition will not