Because of self-updating, I’m at 5.9.x. The 4.x era was great for me and some of my plugins will work fine. I am so happy to see that CP is already a thing, because I was ready to learn programming so I could do it. I cannot get the button, the migration plugin dislikes some entries made in core f…

You’re welcome. Glad migration worked. You can check out Redirect plugin in the directory to replace Redirection. See if that fits your needs: Redirect | ClassicPress Plugin Redirect URIs with a 301 (permanent) or 302 (temporary) redirect; redirects can be edited, toggled on/off and ea…