For New Quizzes, the item banks are account based. I noticed that on a different course shell on the same account, you’ll have access to anything you made in an item bank.
I do not know if an export package would actually save the item banks in the export package though. That is unknown for me.
Yes, it is possible by importing content. Assuming that you are the teacher for both courses (one with the question bank and another one where you want to transfer it), follow these steps:
What if you aren't the instructor in the other course. We have 7,000+ online students and 500 master shells. SME's and Instructional Designers create quizzes/exams in the master shell, which copies to live sections every 8 weeks. The people who develop the quizzes don't always teach, or teach all sections.
What do we do in that case?