Divisi parts not showing

Hi,
Does anybody know which reason could make a divisi part not showing? I have a change from “divisi a 2” to “divisi a 4” with written music in all divisi parts, and the parts 3 and 4 of the “div a 4” are not being shown neither in full score nor parts…
(if I insert a system break at the “div a 4” change, then the hidden parts are shown!)
Thanks!

This is noted in the manual, here.

Oh, thanks pianoleo!
I see, Dorico can’t know which of the previous divisi parts goes on the new divisi change… Now that I understood the reason it would be easier to remember :slight_smile:
By the way this is because it forces to show all divisi parts of the largest divisi in each system. If the divisis were shown as in Gallery View (adding or removing new staves at the middle of system) it would be probably different!

Oh, thanks pianoleo!
I see, Dorico can’t know which of the previous divisi parts goes on the new divisi change… Now that I understood the reason it would be easier to remember :slight_smile:
By the way this is because it forces to show all divisi parts of the largest divisi in each system. If the divisis were shown as in Gallery View (adding or removing new staves at the middle of system) it would be probably different!