Castilla wages question

I can't seem to find an answer on this so any clarification would be appreciated. I just got hired by Real Madrid but have so much dead wood on my wage budget. I want to know if Castilla players' wages count towards my overall budget costs (it's just too onerous manually counting every player to check!) and therefore if they leave, get signed by another club or their contracts expire, does that come off my total RM salary budget? I have players at Castilla earning six figure weekly salaries!