We create separate articles for the translated versions, where the original content = parent and each translation = child. That way we can track what is translated and the users can switch between different language versions from the article level.
What you should be aware of is that if you have AI Search on and your language = English, these translated children won't pop up in the search results, only the content in English. You will be able to access the translated versions from the article level, but not from the search. Plus, parent-child translation is not available for knowledge blocks.
