Including Ratchet and Clank: Into the Nexus on a list

I can't add Ratchet and Clank: Into the Nexus into any of the lists I've created (Games I've played in 2013 and Games I've Finished in 2013). When I select it (by typing in the name), the picture doesn't show up in the list and it just says "_associated title_" I can type my comments into the field, but when I save the list, the entry disappears all together. If I try to edit the list and add the game again, I can see the comments I originally typed.

@lazy0718: It looks like there was a duplicate entry. Try adding http://www.giantbomb.com/ratchet-clank-into-the-nexus/3030-43219/ ?

That did it. Thanks!