Hi, I have several php version installed on debian 8 + ispconfig3. Technically theye are working, I can change the php version of a site and the system put its config file into the correct place and able to start with the required php version. But. I found that, if I change a php version for an existing site (say from 7.1.4 -> 7.0.18), the config file moved as expected, but the php-fpm processes did not restart to make it work. Instead I have to restart the old php-fpm and restart the new php-fpm to get it work, as the example above: I restart php-fpm-7.1.4 (it will remove the changed website from the running process) and I restart the 7.0.18 -> which will pick up the new config and serves the website. So, my question: how does it suppose to work? What steps completed after one change the php version of a site? These steps are completed (old restart, new restart) by cron once a day or similar?