How do I RE-open?

I successfully imported files/project from robohtml into robo help and created/generated a robohelp file/structure.

I had it create the robohelp files in another folder.

Now I can't seem to open the new folder/project for further editing. I don't see any of the appropriate extensions that the open or import dialog boxes look for.

With that said, when I open the default.html file that I created in that new folder as the starting page, I see the entire help system just the way I like it.

Does this make any sense?? I am tired and the help system in Robo is sparse.

Thanks for your patience and help.