In Course Navigation, click the Quizzes link.
Click the Settings icon [1] and click the Manage Question Banks link [2].
Open the Question Bank by clicking the title of the Question Bank.
Click the Move Multiple Questions button.
Select questions to move [1] and select the destination bank [2]. Then click the Move Questions button to move the questions to the selected bank.
Open the Question Bank you moved question(s) to and view the moved question(s).
Note: Changes to questions won't automatically update quizzes that are already using those questions unless you remove the question and re-add it.