User:SOTO/Forum Archive/Help!/@comment-7657843-20170301223451/@comment-26845762-20170302170126

What happened was Dr Who fans thought the bronze Daleks were better than the Paradigm Daleks.

I don't think there currently is a fictional explanation, and unless John Peel is writing a new tie-in book, we probably aren't going to get one any time soon. Just think whatever you want!