I want to take a homework assignment, quiz, or other content from a course I taught in previous semester, copy it into my current semester course, modify it, and then publish it when I'm ready. However, anytime I copy something that had been published in the previous course, it is already shown as published in the current course.

How can I copy something as initially Unpublished, giving me a chance to modify it before everyone can see it?

For instance, if I plan to give a surprise quiz, but I copy it from a previous semester, and it's already Published in the current semester, I think the students can see it. Maybe they even get an announcement that there is a new quiz available. The only way I really know what the students' Canvas experience is like is by asking them.