i'm testing the upgrade from 7 to 9 and so far it's all very clear however now there is this point in the readme
7 Â· Assuming that you followed the above procedure you can now remove all old PHP-Fusion files except downloads, forum/attachments, images, infusions folders, config.php and the new .htaccess file.
What files are this?
all php files not in the 9 package?
or just some folders?
That is not very clear to me and i would appreciate some help here :)