Cadiz Cortes in Grand Campaign?

I don't know if you guys have experienced this before, this was a first for me after 500 hours of playing Napoleon. It looks like somehow Denmark in my French Grand Campaign is in possession of the Cadiz Cortes tech, which is from the Peninsular War DLC. I have never seen anythign bleed over from one campaign to the other.

Interestingly enough, they would not trade it to me.

Spoiler Alert, click show to read: 

Same thing happened to me once. I had installed some mod, don't remember which one, which I have since uninstalled and I had blamed it on that. No idea how i could reproduce it, but you're not the only one.

I never installed a single mod and I got the same issue as you. It's just another CA screwup.