I update my server from 3.1.1 to 5.1.4. I do three updates to go to 5.1.4. It works fine but some document with TOC don't work. The TOC is there but the link don't work. I delete the TOC, save, edit and insert TOC again. It doesn't work. I try to copy the content of the page to a new page. Some item in the new page have link but some don't. Do you have any idea?