I am confused. So are the culture wonders being destroyed when you take over a city?
If so how do I change them so they don't do that?
Yes, Cultures are destroyed when you take a city. It's an XML issue. There are two tags you need to change.
- <iConquestProb> needs to be set to 100.
- <bNeverCapture> needs to be set to 0.
There are a lot of other Wonders with that problem as well. I can provide a list if you want. All of mine have <iConquestProb> 100, <bNeverCapture> 0, and <bNukeImmune> 1.