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I have operated a site for over 25 years, and as a result of rolling the site into new software over those years there are may 301 redirects in .htaccess.
Since the site often uses categories, articles or products with “gluten-free” in the name, a dash (special character n%2d) was used very often in the sites SEO URL’s. Initially, all of those SEO URL’s substituted n%2d for the dash (-) and they were all indexed by google and linked to from other sites using n%2d, so the backlinks would…
301 Redirect Flip Flop for Dash Special Character