Yeah, if you went looking into the code, then I probably wrote something about Vesta in there.
I think its repositioning and stuff should probably be handled by Asteroid Belt (which makes sense, as Vesta is a relatively recent release), because if I mark it officially as an outer planet (which it likely should be), then it will lose the connections to Tiber and Fulgora in the image, and only retain the connection to Paracelsin. And if Paracelsin weren't installed, I believe it would have no connections left (or maybe it might connect to Cubium, but that just kicks the problem down the road)
I don't actually know how to move the planet myself, and I don't think I want to mess with that sort of change from within this mod, soo.. I'm not sure what to do with it.