Hello, I recently tried to migrate my dedicated server with Debian 9.9 (stretch) Release: 8 to another, with Debian 9.9, Release 9.9. On the old server I run one Wordpress (WP) site under Apache and PHP 5.6 in the ModPHP mode. On the new server, after the migration, I have encountered such problem with site files ownership: 1) The files uploaded via FTP have group/user ownership given by ISPConfig 2) The Wordpress core files, after updating via WP, have also group/user ownership given by ISPConfig. 2) BUT: The wordpress plugin files, after updating via WP, have "www-data:www-data" ownership. This makes them impossible to delete with FTP client. This behaviour has never appeared on the 'old' server. Do you have any hints, what should I do to have these ownership from point 3) set correctly?