Of course there is a legitimate excuse reason why a merit history can look like that. I have no doubt you will be able to explain it all in a way that sounds reasonable and convincing (to you anyway).
Such shiny goalposts. Are these new by any chance?
Of course there are reasons. Like using the post history page and/or tabs and/or bookmarks and/or any other methods merit sources use to do their job. I guess it's a good sign that this is all you can come up with in your crusade.