[Fechado] Change Language Code

Предыстория вопроса:
We already have a multilingual website running with WPML, and the Ukrainian version currently uses the directory /uk/ in all URLs. We would like to change this directory to /ua/ so that all Ukrainian pages use /ua/ instead of /uk/. The site in question is link oculto.

Симптомы:
No specific issue or error message mentioned.

Вопросы:
Could you please tell us the correct and safe way to change the language directory slug for an existing language?
Are any additional steps (redirects, settings, etc.) required after changing the language directory slug?