I input tuplets in the key editor - 7 over 3 - but the score editor misinterpreted them. Can I fix the score?
Should be:
I guess some things are just not possible. 
With some more complicated tuplets like this you might have to re-enter the notes using the mouse in the score editor itself to fix them. When using the tuplet option with a specific value, it “stamps” the note with that instead of interpreting it. It is kindof an override.
How would 7 over 3 be defined in the score editor? I only see a limited number of options in the pull-down.
Sorry, I didn’t notice you were in 9/8 time - that option doesn’t seem to be available. The Dorico code that runs this supports basically any tuplet because you can type in the ratio you want, so you can do quite complex tuplets there including nested tuplets, but it doesn’t look like Cubase allows manual entry of a ratio yet.
Well… thank you. It’s a rather extreme occurrence. I don’t think I’ll run into too many of these…