I need to have my Madcap Doc-to-help project (in NETHELP format) entirely functional in Robohelp, but I did not find a way to import the entirely project. I have more than 4000 pages, with hyperlinks, glossary terms and context ids.
I can´t simply import the doc files, because I will loose all this resources.
Never heard of an import for that - you might want to try taking the HTML5 output and reverse engineering a RH project out of it - see Peter's site about that (grainge.org) or there's a paid script from Helpessentials that might be faster.
John Daigle has a Flare to RoboHelp converter. It is not 100% perfect but it does do a good job with just some tidying up afterwards.
That tool may or may not work - the OP has a Doc-to-Help project, not a Flare one (both owned by MadCap though).
Oops. Thanks for picking me up on that one Jeff. John's tool is not an option in this case unless, just a wild thought, MadCap can convert a Doc to Help project and then maybe John's converter would work. Long shot.
It might be easier to create a CHM from Doc to Help and reverse engineer that. That usually works OK.