It's a bit of a weird setup, but yeah it used to work in 2.10, but doesn't work in 2.5 and prevents at least one quest from being playable.
This quest I know of is here:
http://www.purezc.net/index.php?page=quests&id=126
And this video shows how it's supposed to work, scroll to about 9:55 in the video to see it.
http://www.youtube.com/watch?v=AWhdHw_-CaA
