Test 1 Using the terminal go to the root folder of your moodle instance. Do a grep for 'enrol_database_admin_setting_category' ( grep -Ri enrol_database_admin_setting_category ) Confirm that the only results are in: enrol/database/upgrade.txt (the notes about the class removal) Test 2 Log in as Admin. Go to Site administration > Plugin > Enrolments > Manage enrol plugins Go to the settings page for the 'External database' enrolment plugin (URL: /admin/settings.php?section=enrolsettingsdatabase) Confirm that there is a 'Default new course category' setting which is displaying all available course categories in a drop-down select element.