Can you share an article how links work with translation, so I want the link to update to the corresponding language, and how do iframe elements work with translation for example?
If I update the article, add links to it, I need to rerun the translations?
Each translation of a page/post has a unique post ID (like WordPress regular pages/posts). As long as a particular translation is not deleted and added again, that ID will remain the same.
Another benefit of sticky links is that WPML will automatically convert them, based on the current language.