I am planning on making lots of cdlc upcoming but some of the ones I want to do are already made. Seeing as how I am obviously dumb and don't know where the appropriate threads are discussing this sort of thing can someone shine some light on me.   I do not have any intentions on taking their material for I would start mine from scratch. I just want to know the rules on duplicates since I remember I had done one long ago and there was some sort of issue even in the slightest.