I switched to Unite for woocommerce integration. This has meant moving from tags to product_tags and I now have many instances of tags that are no longer used. This has presented a problem. If I visit a url for a tag that has never existed, I see the “Oops! That page cannot be found” (404 page) eg:
However, when I visit the url of a tag that has previously been used but no longer exists, instead of a 404 I am presented with the “Nothing Found” page.
This is being returned as a soft 404 in Google Webmaster Tools. Is there any way to resolve this?