oh yea i havnt been playing recently but when i last playted i built a ... well it was a large settlement, with a lot of ground flattening and tereforming of the land, if i turn away from my buildings the game unloads them and reinstates what the land once looked like.. idk why they havent taken a note from minecraft where it basically overwrites the original land and saves what you built in its place as the new perminent land feature.. its always fun when you turn back to your town and it takes 40 seconds to load everything back in