Classic Cataclysm Pagle :: I have noticed that the Ironforge Auction House NPCs are absent either on the extra layers or on the base instantiation or based on some other factor.
I was able to invite a level 70 warlock that was unable to see the Ironforge Auction House NPCs into a party with a level 62 warlock on another account that is able to see the Ironforge Auction House NPCs. The level 70 warlock was pulled into the layer the level 62 warlock was on and the Ironforge Auction House NPCs then became available. So clearly there is some sort of condition impacting the availability of the Ironhouse Auction House NPCs in various layers (or base layer).