Curious,
Is there a way that when someone uses EH when they pick up an item that already has another plugin added to that item,ie Enhanced Furnace
that they can pickup or remove a furnace but retain the upgrade a player already has on it?
In a nutshell, if a player has upgraded their furnace, and they need to pick it up or remove it and re place, they lose their upgrade on their furnace

That would be a question for that furnace plugin, isn't related to the EH really.