Associating trivia questions with more than one game

I've added a few questions to the Giant Bomb trivia, but when I type in more than one game to the "Associate This Question to Something" field, it lets me type in as many as I want but it only accepts one of them.

I added a question about DOOM, but it also applies to DOOM 2, Final Doom and Ultimate Doom.  It only accepted the Ultimate Doom association.

Yeah, I know it doesn't really matter when you're in the "endless trivia" mode, but it would still be nice if the question would show up in the trivia box when people go to any of those DOOM game pages. :)

I'm pretty sure it associates it with the last game you add...If a question has to do with all those games, it's probably best to just associate it with the Doom franchise (even though it apparently doesn't have to do with every Doom game).