Ossia Bar Won't Allow Instrument Change

Hello. If I have a staff with ossia measures, I am unable to then change the instrument in the Setup panel. Is this a known problem or am I doing something incorrect? Thank you.

I’m afraid you cannot change instrument if the existing instrument uses ossias, due to some limitations with handling multiple staves. I’d suggest adding a new player holding the desired new instrument, then manually copying and pasting the material from the old player to the new one.