HOTFIX: This morning we applied the temporary fix for the issue causing all structures on plots to be deleted when a player attempts to delete a completed structure.
Known issue associated with this hotfix: The planning window no longer shows outlines for your completed structures. While this will cause difficulty planning your plot, we felt that patching this temporary fix was less detrimental to players than having the entire plot disappear. We are sorry for this temporary inconvenience.
We anticipate having a permanent fix up by next maintenance period at the latest.