Can someone please tell me why some parts I've selected aren't showing up in full score?

I’m using Dorico 6.2.2 on Windows 11 and I can’t get some players to appear in my full score.

This is a project with 14 flows and I’ve entered the music fine in flows 1 and 2 but for some reason when I’m setting up the full score for flow 3 I can’t get the trumpet I & II staff to appear. The same staff shows up just fine in flow 1 and 2.

I’ve exported just this flow which I’m attaching to this thread.

thanks for any insights and help you can offer!

MEADOWLANDS - III Captain Kidd.dorico (1.4 MB)

The player is not associated with the flow for that Full Score layout in the attached file.

In Setup, select Trumpet I & II player in the left pane and make sure Full Score is selected in the right pane. Notice the flow at the bottom is unselected (and dimmed). Alternately, you can select the flow at the bottom and notice that the desired player is not selected. Selecting the flow in the first case, or the player in the second, will add the player to the layout for that flow.

This level of independence between player, layout, and flow give us great flexibility in how we set things up.