I have a canonical tag on several pages that MOZ still reports as duplicate content. What would cause this? Here is an example:

[standoutd]

This post is deleted!

[MoosaHemani]

If you have a canonical URLs setup, I don’t think you need to change that! If the thing that you have changed just got like few days then you should wait until the next crawl and if you think it’s been enough time and Moz has already crawled the version after you have made the changes it is a better option to contact their help desk that is help@moz.com

Hope this helps!