NPCs in other levels not loading?

[Yen]

I'm not sure if gmaps have always acted like this, but NPC scripts outside the player's level on a gmap aren't running.

I have a ladder that draws itself on the clientside, using showimg. However, the showimg hides if the player leaves the single level with the NPC in it.
So, if I'm a level below, I won't see the ladder. If I'm a level to the left, I won't see the ladder.

Is there any way to change/fix this?

EDIT: Kai, well Skyld cleared it up. Clientside only uses the one level you're in, on the gmap. Is there any way to make it load NPCs outside the level?