I have a file where all the piano notes are on the upper staff, and I would like to explode them onto two staves. Accordingly, I selected all the notes in the first measure below, then Command-C, then I selected the rests in the two staves of the third measure, then Edit->Paste Special->Explode. But instead of dividing equally, I end up with one note on the upper staff and the remaining notes on the bottom staff:
I get the same if I paste into a completely different player. How do I get the notes to divide equally like the manual says will happen? Is there some setting I’m missing affects this? [I am aware I can select individual notes and move them to the lower staff, but that is fairly tedious. And I might be able to dig up the original midi and change a split point, but at this point, this is dorico file I have.]