Did you know there is a feature in Canvas that allows you to restore deleted items in your Canvas site? To see a list of all the items that you can restore, simply add “/undelete” to the end of your course URL that appears on your Home page. It will look something like this: https://iu.instructure.com/courses/1234567/undelete.
Items on the undelete page are not listed in any particular order, so it may be helpful to use your browser’s Find function to locate an item in a large list. If you are restoring items that had grades attached to them, those grades are typically restored as well. You might need to exit the course and reenter it to see all your student data restored.
Learn more from from this Knowledge Base document about recovering missing, deleted, or overwritten content in Canvas.