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If the canonical tag is on the page, despite the fact the page loads in either version only the one that you have in your canonical tag will be indexed. As far the Moz reports these are not updated minute by minute, to see if the canonical tag has fixed the problem in Moz's reports you'll have to wait till they do their next crawl (once a week). You may also use Google's Webmaster and ask for a re-crawl after you made changes. Hope that helps, Don