Unable to add slur to top staff

[Tim Mariott]

I have been creating a choral score which is SATB + a Descent staff which is empty for much of the piece. I therefore used "Hide Empty Staves" to hide the Descant staff on most pages.

When I came to adding slurs I found that I was unable to add slurs to the Soprano staff, but could add slurs to A,T and B. Having tried closing down, rebooting, etc, I finally tried unhiding the Descant staff, which is located above the Soprano staff and lo - I suddenly could add Slurs to the Soprano staff.

Just thought you'd like to know!

Tim