I know @assomers said it couldn't be done for X reasons
but really if you can save a decoration this autosave would stay as it is but if you sell something... in the autosave you get an option that you no longer have decoration "X" pet u holder dresser in general When you click on it, an option would appear that would say "do you want to put this autosave? Items you no longer have in inventory will not appear"