I upload 24 small html files once a week. They are nearly identical, with only a few printed values on the html sheets being different. I delete the 24 previous files which were properly linked and displayed. I then clear the cache. When I upload the new files, they might or might not automatically link. I have tried reloading the exact same files, and the linking fails. To get them to display, I have to manually delink and relink them from the page on which they are displayed. I can find no reason why it fails.