I was selling 3 Deadly Blunderbuss' on the auction house and I didn't have enough gold to put them up and now one of the rifles is greyed out in my inventory and that slot cannot be used and the rifle is not moveable. I checked AH and it wasn't there because the rifles I had on the AH previously were in the "long duration" for an auction which was not the "very long" duration as I had used the "very long" duration for the previous rifles and they went down to "long duration" so the item is not on the AH. Since then this has been fixed.