[Cerrado] Missing translated lines when updating a translation

Background of the issue:
I am updating a translation using the new WPML translation editor on WooCommerce products.

Symptoms:
Some of the already translated texts are missing, and some HTML tags are not appearing, preventing me from saving the translation.

Questions:
Why are some translated texts missing when updating a translation?
Why are some HTML tags not appearing, and how can I save the translation?