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Wow - sorry this question slipped past, Ruth. As long as the proper HTTP redirect has been written to HTTPS, there's nothing that needs to be done with canonical tags. The beauty of 301-redirects is that they are server directives - once in place, its no longer even possible to reach the non-HTTPS URLs. The HTTPS URLs should of course still keep their own self-referential canonical tags, but that's handled automatically in most CMSs (Content Management Systems like WordPress.) Hope that covers what you were asking? Paul