I've just got TSW3 (ps5) installed, and come to download all my TSW2 (ps4) addons into the game. It wants me to pay for the routes that were included in the ps4 TSW2 Collectors Edition - (Hauptstrecke Rhein-Ruhr, Peninsula Corridor and East Coastway) Is this expected behaviour, or do I need to lodge a support request?
Yes, assuming the TSW2 collectors edition is a physical disc, then there is an option on the support site to request the routes. The details are in the TSW3 FAQ somewhere.