Steel Drum treble clef line isn't playing its part after transferring to MuseScore 4

After I transferred a piece from MuseScore 3 to MuseScore 4, the treble clef line of the steel drums would not play its part but the bass clef line would. They are the main instrument in the song I made, so I would appreciate if it were fixed. (Or maybe I'm just stupid, but I've tried everything including changing the instrument playing the part to Piano, which leads me to think it is not only a steel drum issue.)