If a course has been soft-deleted from your LMS and was previously archived, you can restore it using the Course Restore feature. Here's how:
Navigate to the course you want to restore in your archiving instance.
Locate the Restore option:
If you have the right permissions, you’ll find it in one of two places:
In the dropdown menu next to the “Sync to LMS” button, or
As a standalone “Restore Course” button in the top-right corner of the course page.
Click the Restore button.
A notification window will appear, letting you know that the course is being restored.
The page will automatically update once the course has been successfully restored.
Note:
Restoring a course to the LMS will restore the original course.
Canvas Course Restores, restores the original course with the content only. Enrollments will need to be added to the LMS course.
Brightspace Course Restores, restores the original course with the content and enrollments.
If a course has been hard deleted from the LMS, you will not be able to restore the course in Canvas. You will only be able to sync the course as a new course to your LMS.