I don't get one rule from game: it is said that if you gather ammount of leads to exchange it into proof it is obligatory to do so immediately. Second rule say that it is forbidden to exchnge back the proof into leads - once changed they have to stay this way. Does it means that if i will have to spend leads tokens to do something (side quest, support action, obligatory loss of leads due to some effect) i can't do this unless i have them "loose" (not changed into the proof)? What happens: I'm Geralt and i just required 3rd red lead. Do I have to exchange it automaticaly into a red proof? If yes what will happen if some effect from card will tell me to spend 2 red lead tokens? I exchange the proof back, spend 2 red tokend and leave 1 for myself? Or i dont spend anything since i dont have red leads (only red proof) and also i cant do any support or side quest missions which requires spending leads?