[ARCHIVED] Terrain paint disappears/changes after leaving lot

I had this happening in my game today for the very first time. I built a new residential in Oasis Spring (in an old save) with some terrain paint, saved and closed the game. When I launched the game again I saw the terrain paint had disappeared. I use several cheats : bb.moveobjects, bb.showhiddenobjects and bb.showliveeditobjects, if that can help.