When generating webhelp from Robohelp 9, i find that the first book in the TOC is by default opened. Is this a property of output generated from Rh 9? If not, please let me know the path for this TOC settings.
The help opens the default topic. If you have the TOC synchronised which is what most people prefer, then the book that topic is in will be open. Move the default topic above the first book and you should get what you want.