Enable the multilang filter and set it to apply to 'Content and headings'. Install the Russian language pack (ru). Create a course. Visit the course. Turn editing on. Insert an activity, e.g. a Choice. Set title to <span lang="en" class="multilang">Title EN</span><span lang="ru" class="multilang">заглавие RU</span> Save and return to course. Cog→Backup. Click next on the appearing /backup/backup.php page. Cross check that, on the following page, the choice title does pass multilang filters and says Title EN – if you switch to Russian, заглавие RU Do the backup Restore the backup in a new course Cross check that the choice title does pass multilang filters and says Title EN – if you switch to Russian, заглавие RU