6S Marketing wrote a good blog post in response to this question.
To summarize, yes, you may have recurring content issues with the A / B test (MVT is ok), but there are measures you can take to avoid this, for example:
- use noindex in your title for page B
- use the canonical tag for page B to point to page A
- exclude page B in "robots.txt"
- make sure page A is in the sitemap and that there are no other pages
- do not link to page B from anywhere, if absolutely necessary (I don't know why this would be so)
After completing the test, you can configure 301 from page B to page A (this is also important when the bookmarking user of your page B is connected to it)
The same goes for any other alternative pages that you have similar to C, D, E, etc.
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