took over an abandoned deed, has a wagon and a couple carts

At 700,659 I found an abandoned deed made by Sebation, which was still in decent shape. It has a wagon and a couple large carts, and if it's possible I'd like to use them and access anything that was left on them to build further. If that's not allowed, could you remove them please? I heard they won't go away now that they sit on an active deed. I'd much rather put them to use if possible!

Thanks!