I had a semester ONE class, with quizzes. I now have a semester TWO of the same class. I imported a quiz from the semester one class into the semester two class, but get the message "Some settings have been disabled because the assignment is in a closed grading period.". I tried copying the course from semester 1 to semester 2, same result. Now I have multiple useless copies of this quiz that not only do not let me edit them for use in semester 2, but cannot be deleted. How 

How can I reuse the quiz, rather than typing the entire thing in every semester? And how can I delete these useless copies?