I'm no admin in this game to say if that might get into the leaderboard but I think the only problem is that there aren't much people with the Wii demon version of CS+, therefore, it would be a ghost category

I was the one who rejected it. I usually try to contact the runner before rejecting a run, but i entirely forgot this time. You can still delete the duplicate runs, so they don't mark your profile for ever at the ''Rejected runs''. There's no visual bugs on the leaderboard, Map System is a misc category like CaptNinja said, so if you didn't check there already, you should. If you are talking about it not appearing in your profile, you gotta check the ''Show misc. categories'' box for it to appear. It shows up for me, at least, but if it doesn't for you, it's indeed something to bring to the Speedrun.com staffs/admins. Thank you.