I recently signed up for AdSense and in order to get the ads.txt working I had to change the format of the site urls from dated to post name. Google has selected the old format of dated urls as canonical (despite the user-selected canonicals being the new correct versions), which now all lead to a 404 error. I have hundreds of blogs that need re-indexing on the correct url format, is there a way to get google to do this en mass? I can only manually request a handful of re-indexes per day.
Example:
My URL: [https://thecircusdiaries.com/moon-songs-by-giffords-circus/](https://thecircusdiaries.com/moon-songs-by-giffords-circus/)
Google indexed canonical: [https://thecircusdiaries.com/2015/05/26/moon-songs-by-giffords-circus/](https://thecircusdiaries.com/2015/05/26/moon-songs-by-giffords-circus/)
(New to this, as may be obvious. Please be gentle if something sounds dumb!)
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What are your permalinks set to?
Ensure your URLs are setup correctly. You can define canonical URLs with most good seo plugins.