I do have the duplicate as per step 1, but it does not help in this case. Let me explain: I used machine translation to test that everything is in order. Now, I am working with a translator who is translating lesson by lesson; after each lesson, I am uploading the human-translated content and sending the review link to a reviewer. The problem is that content in lessons that have not yet been started by the translator is filled by machine translation (since my pseudo-translation test), so if the reviewer looks past the review "boundary" then the experience is not pleasant. I want therefore to get the lessons back to the original language.