Prepare the scenario: Important: the script will create a huge amount of labels on the SITE course and will be hard to clean after that. I strongly recommend creating a new instance just for the test and remove it later. Copy both mdl-78010-generator.php and mdl-78010-generate.php to your instance root folder. To create 1000 labels, 50% with PLUGINFILE you can do one of the following: Option A: run in CLI: php mdl-78010-generate.php -t=1000 -d Option B: login as admin and access YOUSITE/mdl-78010-generator.php. Once there indicate Number of labels to generate: 1000 Percentage of labels to generate with PLUGINFILE: 50 Select "Downgrade label module to force the upgrade process execution" Click on Generate Display the scenario stats. You have two options: Run in CLI: php mdl-78010-generate.php If you are in YOUSITE/mdl-78010-generator.php and look at the "Current scenario" section Check you have at least "Total labels: 1000" and "Labels with @@PLUGINFILE@@: 500" Execute the upgrade: Go to site administration as admin. If you prepare the scenario with downgrade as explained before this should trigger the upgrade. Continue the upgrade process. Check that "Text and media area" is going to be upgraded and click on "Upgrade moodle database now" Check a progress bar appear in the label upgrade summary Check the number of upgraded labels is the same as the one you see in the preparing scenario (should be 500 unless you have other labels previously created.) When the upgrade is done go to YOUSITE/mdl-78010-generator.php Check the "Lavels with @@PLUGINFILE@@" is now zero