Hi rncala,
Sorry, can't help you with that one. I downloaded the NX 2 demo and tried to install it on an erased drive I put Yosemite on. On the very first launch, it told me the trial period had expired. Huh? I just installed it. Well, I must have installed it some time in the past because according to Nikon's site, from the moment you download the file, you have 60 days to use the trial software. Period. If you don't install it, the 60 day counter is ticking and can run out without you even trying the software.
So, my plan was to see why it wouldn't show the profile you added, but couldn't. As you note, it's also abandoned software with no updates coming.
I would look in the folder created for NX 2, or within the application package itself to see if the profiles it does show you are stored there. If they are, you can add your profiles to that location. But more likely, you'll probably find such a folder in the Application Support folder of either the main Library folder, or the Library folder within your user account.
In either case, you may need to close and restart the app before new profiles will appear. Many apps do that. They'll only read in what's there when the app launches.