You see a guitar part. I copied from three trombone parts - all upstem voice 1 - by using the reduce function from paste special. Dorico made what came from trombone 1 and 3 into upstem voice 2, and what came from trombone 2 into upstem voice 1, but in slash notehead. Now I want to change the middle note into upstem voice 2 but Dorico won’t let me. I only can change into upstem voice 1 but it already is?!? This is why I don’t like voices btw, and they don’t like me.
Could you provide a small project with just those three bars and Trombone 1, 2, 3 and guitar?
Makes it easier to search for a cause and solution.
Did the original stem from a XML import?