Contamination BUg

I got the following problem:

Cause of some reason there is a difference between the contamination fields i placed in the editor and the ones i see ingame, they changed location and also trees standing on contamination arent transformed into contaminated trees. But i have no undead buildings in this region or something like this, did you guys made simmilar experiences?

uhh, contamination? You mean blight? the one that appears every time an undead building is built?
Maybe your trees aren't turning into 'contaminated' one because they're using imported models.. (Although I'm not really sure if it matters if the tree model is ingame or imported tho)

yeah blight, but no i dont use any imported models