I just saw one in the London registers on Ancestry [St. Michael Bassishaw] that duplicated the same parish. The handwriting was different and the entries were arranged differently on the pages so it wasn't a matter of two copies nor of BTs. I thought I was seeing things. Ironically, on one of them the mother's name Judith was crossed out and a different name, Elizabeth, written in [which didn't help either as the father had wives with both names]. Otherwise, the dates were identical. Liane