How do I import/copy materials from a previous Moodle course into a new course?
You can re-use course content that you’ve already uploaded into a previous Moodle course with a few clicks by using the Import function. The ‘Import’ link is located in your current course’s Administration area.
Detailed directions for importing course materials from one Moodle course to another are available at the TLTC’s Moodle Basics guide.
NOTE: Do not import Turnitin assignments. They will not function correctly in the new course space if they are imported from a previous course. You will need to re-create Turnitin assignments within the new version of the course.
Link to this FAQ.