Some instruments not present in change condensing…

Dear fellow Doricians,
I seem to have a bug here… I am editing a whole opera piece, and in one number, the trumpets are in the music, they also are a custom condensing group in Layout options (for the appropriate full score layout), but they do not appear in the condensing change window! And I want them condensed, but they’re not. Is this a known bug?
Daniel, please let me know if you need the file…

Apparently, the problem is because initially, those were trumpets in F, and I changed the instrument. They are still visible in the layout options, but the fix is to remove them from there and put them back. Then everything is working as expected again.