[Решено] Problems with automatic translation

Background of the issue:
I am trying to translate a page from English to German and Swedish. The issue can be seen on this page: скрытая ссылка. We disabled automatic translation because we want to use it only for new pages and not overwrite old translations.

Symptoms:
Some text is missing in the editor. We expected to see all the English text in the editor.

Questions:
Why is some text missing in the editor?
How can we use automatic translation only for new pages without overwriting old translations?