Did you ever make changes to your template file(s), only to discover that everything you changed was gone with the next update? Then we have good news for you: starting with Joomla 4.1, this has become history! With the option to create child templates added to the core, you can make changes that last. This article explains how it works.
Read more https://magazine.joomla.org/all-issues/may-2022/a-deep-dive-into-joomla-child-templates
