Mastery Paths and Older Evaluations

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Hi! I am trying to incorporate Mastery Paths to a class. I followed the step-by-step guide and was able to create a path using an evaluation I created after activating MP function; but if I try to create a MP with an evaluation from before the activation, it does not work. 

Does anybody have any clues of what I might be doing wrong or if there's a function feature that does not allow using previous evaluations as a starting quiz of a MP?