No instruments automatically loaded into Halion Sonic 7 slots - Dorico SE5

When I open example pieces or templates, no instruments are loaded into the slots in Halion 7. I have to manually search and add instruments. I’ve just been trying to get to know Dorico SE 5 and thought instruments automatically loaded for each track and then you could change them. Now this doesn’t happen.
In preferences I have Default Playback template as HSSE (SE) and Default Halion Plug in - use best available.
I have also tried going to Play - Playback template -apply and close but this doesn’t make any difference

Please have a look at this thread

Thank you that worked.