I am having lots of trouble with images that have been placed from my Files into various pages. They are added to the pages successfully, but later when I return to a page, the images have been replaced with "missing image" icon (a tiny blue box with a ? in it. What gives? Why are images becoming unlinked to their file locations? It appears to be random, although it typically happens soon after the file upload and the addition of that image to a page. I add the files to the File section, then I go to the pages and add them from the Canvas File tab. Any thoughts on how to fix this? I am trying to stay one step ahead of my students while creating detailed informational pages. This is putting a real damper on my efforts. I don't feel like I can publish these with missing images.