I have Hunding's Palatial Palace and am using Daedric Thrones turned upside down to make air bridges. In the back of the house on the beach there is a small island just a bit off the shore. I was placing the thrones to make a bridge to it but can not continue as apparently it is not part of the house. So I removed the thrones, or at least tried.

There are three thrones that it appears it allowed me to place outside the house boundary. I can not retrieve them. I can't use the housing editor to retrieve them as I have over fifty of these thrones placed across two houses to make air bridges and I have no way to know which are the three I want. Also, the retrieve isn't showing them all anyway. I need those three removed but have no way to do so. Can yall get them? At this point I don't care if you put them back in my inventory or destroy them, I have tons more. But I don't want them out there floating over the water looking stupid and ruining my shoreline. Either that or maybe make that little island part of the house.