Hi Wesley,
Thanks for getting back to us. We're on version T11 and looking to upgrade to version 12 in the next few months.
I'll have a look at exporting and importing the questions, but I'm thinking a simple setting which keeps the course quizzes separate when editing the questions of the backed up and restored new courses would be perfect (perhaps a checkbox on the Backup Settings page next to the Include Question Bank checkbox) since everything else in the new courses created this way are already separate.
Many thanks