In the dvd extras of the Haunted Mansion movie, there is only one deleted scene of the ghost reveal in the attic.
But, during production, the backstory of (butler) Ramsley, Master Gracey and Elizabeth were going to be fully explored. The backstory would've been told through the discussion with Sara and Gracey. This was ultimately cut, but in the blooper reel, some parts with Gracey led me to believe that they might have been part of this lost backstory footage.
This makes me wonder: did they film this backstory but not release it? Or did they at least film parts of it before deciding to drop it?
I know this website doesn't deal with "wonders", but I think this might be nice to keep in mind.