The TOC for one of the child projects I have seems to break almost every time when I make changes to the project. It doesn't necesarily has to be a change to the TOC, it could just be a change to one document from the Content Section. It happens randomly so I couldn't establish what is causing it.
The project has over 500 documents and I would say approx. half of them would dissapear from the table of content when this happens (please see image attached). I keep having to zip the project before making any changes and then if this happens I have to use the back up version, make exactly the same changes and it works. I am not doing anything different.
Is this something I am doing wrong or is it a bug in Robohelp 2020?