So, I've been building up a 100x100mm square filter system and picked up a Hitech Red 25 filter. When I pulled it out of the holder there were streak marks. I got a lens cleaning cloth and cleaned it but found that the red had come off on the cleaning cloth. It looks clean now, but I was very surprised to see the color coming off on the cleaning cloth.

Am I missing something or is that not supposed to happen? I'm thinking about picking up another red filter, maybe a Cokin Z pro Red 25.