Quote Originally Posted by mc12345678 View Post
Yes. By moving the store into or out of a directory, the uris have technically changed and need to be created/recreated as the new active uris with the old active uris made not-current so that the old links will still direct to/reach the now current uri of the same product.
You have to rerun the ceon_uri_mapping_installation_check.php. I get that. But after updating my .htaccess, I'm still getting 404s with every combination of the final rewrite rule.

RewriteRule .* /my_site/index.php [QSA,L]
RewriteRule .* my_site/index.php [QSA,L]
RewriteRule .* /index.php [QSA,L]
RewriteRule .* index.php [QSA,L]

and I'm not sure how to debug that.