Hello,

1. The translation should not be lost.

2. I just did the same as described in our documentation:

https://xtemos.com/docs-topic/theme-translation/

1) Download translation: https://prnt.sc/xfPp9F0MqVOn

2) Renamed the downloaded files: https://prnt.sc/cz8RWDMf1Sj- , and upload them to the website_root/wp-content/languages/themes/ path.

You can also reach out to us if you have any questions.

Kind Regards