Master Copy of Centromeric Satellite DNA

Hey, I am looking into some interesting gene conservation patterns in centromeric repeat DNA. My advisor threw out a theory involving conservation via a "master copy" that all other copies were compared against. However as far as I can tell this theory has fallen off the face of the earth, with some prominent papers in the 70's 80's and 90's, but nothing I can find from current literature. Does anyone know why the theory seems to have been discarded? Is it a lack of evidence or evidence that actively discredits it?