I'm using QuarkXPress 2017 to create a Kindle ebook based on a print layout that someone else has created for commercial printing. Everything's going fine apart from the Table of Contents; when I load the .mobi file into KDP and preview it the TOC just holds a load of entries saying "New Article N" where N ranges from 1 to 30 (though not every number in between, 25 in total).
I assume it's generated automatically from the titles of each article or story in the document, which were set to defaults when they were first created, but I can't see any way to rename them. I've searched through Help and Googled loads but I'm still none the wiser.
Same issue occurs when I generate an EPUB and open it as a ZIP - the nav.xhtml file has the same entries in it as I see on the preview of the .mobi file so I doubt it's an issue with the previewer.