When a course file is moved or renamed, could a quick check be made for any course references to the file that would create a broken link or perhpas change or update these references to the new folder/file name or location? Even just a quick list of where broken links might have been created would allow a course teacher to fix them. It seems to happen to generally happen to me when I tweak image or course folder/file names and digging up all the places where I might have referenced the file is rather clumbersome.