Happy holidays! Can anyone gift me with the wisdom of being able to somehow share an edited quiz to a course with multiple shells?
Right now, there's no easy way to do it. You'll have to import it into each shell individually, either via Canvas Commons or the import too.
However, at InstructureCon 2016, they did say they were working on a Master Course model, which may (should?) allow this kind of thing to be done. I don't recall the timeline, but I'd assume sometime before next summer.