[Termina_Owner]

They don't. Putnpc2 doesn't make a local NPC, it's making a global NPC.... Like, for instance, the ships on GK isn't Database NPCs, each of them is a putnpc2 variable (except the Ferries, they run by a DB NPC themselves)

The differance between classes and Database NPCs is that:

Classes aren't NPCs, they are only excistant by the pure fact that they are used by NPCs

Database NPCs are NPCs on thier own. They aren't attached to levels as other NPCs are, and they can travel. (Thus, when you update a level, putnpc2 aren't wiped out because they aren't part of the level, however you could use /clearnpcs levelname and clear only the putnpc2's out, and not the npcs)

Hope that clairfies.