Create a backup of a lesson on a Moodle website that hasn't this patch applied putting some HTML fragment in the introduction field and embedding an image Create a backup of a lesson on a Moodle website that has it's patch applied putting some HTML fragment in the introduction field and embedding an image Verify that both backups restore OK without any warning or error but that in the first one the introduction's content is lost (it was not put in the backup and associated files are lost too) and in the second nothing is missing. In both when you edit lesson settings you should see an editor (but in the first case it should be empty )