No sound for imported Dorico projects?

When I import a Dorico project into Cubase, it’s impossible for me to assign an instrument to the Dorico midi. The midi shows up just fine, but the little keyboard glyph right above the “e” (sorry, still a Cubase newbie) is greyed out.

For a workaround, I make a new track, assign an instrument (e.g. Iconica Sketch), and copy the imported Dorico track into this new track.

But that feels like a kludge. Am I missing something?