Hi,
Using Q 2016, and a project converted by using Quark Document converter. A few bugs cropped up but I managed to sort them out apart from when I created most of the index and saved the project. Opening the project and the Index box again, the index items had vanished. When testing it again, a message popped up, with words to the effect: "There has been a master page name change or master page deletion". Then the brief test index built ok, but when I closed the index box, saved the file and re-opened the index box, everything had vanished again.
After trying various things, including recreating an Index master page, I'm stymied. Can anyone please help? I searched for answers but haven't found a solution.