Stumped by stumps

I had a Twilight Zone moment last night. I had a terrain, heavily wooded. Well, the neighborhood using it kept crashing my game, so I carefully packed up the houses, and deleted it. Last night I installed the packed up houses and went to get the original terrain that had been the one used for that neighborhood....Wee oooo wee oooo (to the twilight zone theme)...Instead of the forests that had been there, now I had nothing but stumps for all the hardwood trees that had been forests....It looked like a logging company had come through and clear cut the entire terrain. The pines were left and stranger still...cactus had just about taken over all the open areas....UGGGGGGGGGGLEEEEEEEEEEE! Have any of you had something like this happen. Is it a Maxis easter egg thingy? Waiting to hear if anyone else has seen anything like this. K:smt120:goofy: