Talk:Versions/@comment-91.64.93.38-20111005152815/@comment-3991817-20111006130533

It means that in v1.1.8 the developers made an effort to clear the island of duplicated buildings, but of course they messed it up and deleted more than only the duplicated buildings. In v1.1.9 the removed this duplicate building detection, making it possible again to have them on the island.

But this is different from the move to store trick to create those duplicated buildings: this trick was fixed in v1.1.3. So all duplicated buildings come from back in the days before v1.1.3.