I have a course completely built in Canvas with dozens of pages including a variety of links to to files within the Canvas Files sections. the html code shows that these files are linked to their appropriate pages, but somehow the files have been deleted. I (the instructional designer) and the instructor have not deleted any files and they do not show up on the "undelete" page. I'm not even able to drag the mysteriously missing files back into Canvas for them to automatically re-link. I have to go to each line item and manually re-link them. Has anyone else experienced this? It's a mystery in my office.