DON'T REPLACE YOUR CASTLE YET!
It's being reported that the old castles don't have a base and the new ones do. So anything on the first floor needs to be packed up and moved to the second floor or the first floor items will be below the floor of the new castle and you won't be able to access them. Also if you have a lot of crafted stone walls, floors, etc they will go into the moving crate and you will exceed your storage limit. I don't believe you can lock anything down if your over your storage limit. I may be wrong. Be advised! Being the weekend and a lot of folks are off today I wanted to get this out there before someone has a real mess to deal with.
Tell me lies, tell me sweet little lies