I have a procedural material on some planets and I have subtracted from the position of the noise in the material so as to offset the movement of the noise when the planets are in orbit around the sun. The planets are created from a master blueprint that controls their movements, also they slightly rotate as they orbit. When I subtract from the position of the noise the planets do indeed stop changing as they orbit, but when this happens they stop rotating. I think they are rotating but the noise is not moving so it looks like the planet is moving. I have lots of code so let me know if there is a picture needed of some blueprints that pertains to this problem.
