Major issue with deleting items on final alert 2 yuris revenge

[Noyjitat]

Okay so for some very strange reason I have some trees and ore drills I'm unable to delete. When I first saved the map and loaded up they were not present until the game loaded but now they are. And the only way to ever supposedly delete them is to to put ton of stuff on them and then start deleting objects. Eventually I'm able to remove a few then some of the new ones I placed are also undeleteable. What is causing this? Is there another map editor I should be using other than final alert? I know final alert is pretty damn old like the existing games but people do make new and better tools over the years and im surprised nobody ever made something better or if they did I haven't found it.