In vanilla Moodle4, if a question is changed, even in only a minor way, it is saved as a new version The course Question bank shows the latest version of the question and its version number. The change does not in any way affect existing quiz attempts. By default, a new quiz attempt uses the latest version of the question that is available at the time the attempt is opened. That is what is meant by Always latest in the question's dropdown menu on the quiz's Questions page. However, any of version of the question can be selected from the menu and new quiz attempts will use the selected version. Note: One can select the version to be edited only on the quiz's Questions page.