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If you redirect a redirect, that's going to cause a redirect chain. Having too many redirect chains will result to slow page speed. For every step in a redirect chain, about 10% of authority is also lost. The best thing to do is a 1 - 1 redirect if possible. Have a read of this blog post about redirects - https://moz.com/blog/heres-how-to-keep-301-redirects-from-ruining-your-seo Hope this helps!