[Zubersoft]

The page order feature lets you specify any sequence of pages you want, so you could have breaks in it and do things like, 1-6,8-9,14-16. You can also repeat pages, so you could do 1-6,10-13,1-6. Is there some reason you can't utilize that instead of having to add the same file twice? Having said that, there is nothing that will prevent you from adding the same file twice. When the conflict is presented, you can either pick "Replace File" or "Use existing file".

Mike