I have a crosslisted canvas course (3classes) I am slowly moving all of my other classes quizzes to the new quiz format using the migration option. All have worked so far except the cross listed class. Any suggestions to get this to work? Or will I have to export ALL quizzes into a workroom and then migrate those and then import them back?
I'm not aware of any reason for cross-listing to prevent migration of a quiz. However, you might try exporting to your workroom to see if that solves it. If that works, I would report the issue to canvas support, because this does not sound like expected behavior.