My memory of overrideend master pages items matched yours, but I just checked, and since at least CS6 reapplying the master page has removed any overrides, so I guess we're both mistaken.
I did some more thinking yesterday about potential causes for the first problem, amnd I suspect there's an errant second text frame on the Parent Page, but I'd have to see the layers panel expanded to verify.
All of that said, I see perhaps a larger problem here, and that's how you aree utilizing your Parent Pages. This is largely a matter of philosophy, but to my mind if something is going to be altered by the user on the document page, it does not belong on the Parent page at all in most cases. Parents should contain only repetitive content like guides, headers and footers, or backgrounds that will appear on multiple pages. I don't even like having a Primary Text Frame as I find InDesign's Smart Text Reflow often causes more problems than it solves.
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