MySims Kingdom Bug - Issues with deleting pipes/wires/axles

While doing the bonus tasks after completing the main story in MySims Kingdom, I noticed that many require the deleting of wires, pipes, and axles to make room for buildings, decorations, etc. For example, Leaf asks the player to get rid of the frogberry garden to replace it with a 40-block house. However, when I try to delete the pipes or anything connected to it (windmill and water pump), it doesn’t work, which leaves me with no room to build his house and complete the task. This is also the case for things like Morcubus’s castle gate and Vincent Skullfinder’s campsite.