Strange bug - Shopkeeper NPCs are spawned as GM Magicians

[Drawde]

I'm currently testing out my DB addon with EQEmu 0.5.1 before I release a beta version. I've just found a strange
problem - shopkeeper NPCs all appear as Magician guildmasters. Clicking on them will bring up the training window
if you are a Magician, or give the "you are not a member of the Magician class" message if not.
I have checked the npc_types table and confirmed that the NPCs do have the right class value for shopkeepers (32) rather
than GM magician (29) so it is not a DB problem.
There may be other "class mix-ups" like this, I'll do some more testing and post here if I find any.

Have the class IDs changed in one of the recent EQ patches, or is this a bug in EQEmu?

(Also, good work on the Ground Spawns feature - I was just thinking that this would be a useful feature to add. Hopefully
I'll add more ground spawns, such as Misty Thicket acorns, Permafrost crystals, etc. to my DB addon in the future.)