Bukkit

I set the item manager to ALLOW NONE and KEEP NONE

When a player leaves the dungeon with armor they found in the dungeon, the armor is removed from their armor slots and placed inside their inventory. The players original inventory that was stored re-appears as well as the armor that the player was wearing that he/she found and equiped inside the dungeon.

So basicly the KEEP NONE is not removeing armor that is equiped when the player leaves the dngeon, it only places it in the players inventory for them to take home.