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When you already have a keyword cannibalization issue, your first stop will be to look at the data in GSC and GA. What pages are getting the most traffic for the related keyword? Then, get rid of the lower-value pages, because that’s where the cannibalism is occurring. You need to de-index those pages, add related keyword value to the content page you want to keep, and then re-generate and re-submit a sitemap once the content has been updated.

Helpful Resources:

• Keyword Cannibalization: What It (Really) Is & How To Fix It

• Cannibalization

• How To Identify & Eliminate Keyword Cannibalization To Boost Your SEO

• Keyword Cannibalization: How to Find, Fix, and Prevent It

Keyword Cannibalization: What It (Really) Is & How to Fix It

Keyword Cannibalization: What It (Really) Is & How to Fix It