A Master Page is what its name implies: a master. Its purpose is to allow you to set up repeating elements such as folios (page numbers), running footers/heads, margins, columns and guides so that you don't have to add them by hand on every new page.
No content should exist on a master page, nor anything else that you don't want on every page associated with that master. Perhaps a good way to think of it is that it's like blank letterhead paper, which has the company logo, name, etc., but no content.
Your solution here is to remove all the text except the folios, rules, section header and running footer from the master page. Leave the text frames if you must, and use Ctl/Cmd-Shift-click to activate them on each live page.