One-Shot Items and Monster Removal

[Lunatic_Wisdom]

I read on the FAQ and forum that Mate doubles only Monster Enhancers but not One-Shot Items, with the reason given that One-Shots affect only a "side" and not a specific monster.
That being said, if there are two monsters in combat (not necessarily mates) and one is Charmed, Magic Lamp'ed, etc., would all one-shots played for the monsters still be in effect for the remaining monster since none of them were attached to the removed monster?
I'm sorry if this seems obvious; I ask because the thread I found addressing this question is two years old and had conflicting answers. Here it is for reference: http://forums.sjgames.com/showthread.php?t=50381