If I am upgrading 404sefx 1.2 to the new component, do I have to completely uninstall and reinstall the component - therefore losing all of my saved URLs? Or can I just overwrite the old files?
Hello,
the URLs are generated automatically, so it should be no problem just to unistall and reinstall the component. Just in case if you have some manually entered redirects or URLs, it would be wise to backup them first.
As regards the fix mentioned, the SEF was not able to convert correctly addresses including numeric entities that might be produced by e.g. JCE like: item=30%#38;page=3. That has been fixed.