Why does import work badly in SASS/SCSS as well?

Question

css

Why does import work badly in SASS/SCSS as well?
I write imports:

@import "null-style.scss"; //Сброс стилей
@import "general-classes.scss"; //Общие стили для многократного использования 

// ...
//Тут SCSS для разных секций
// ...
// ...
// ...

The bottom line is that some styles are not converted by the plugin to vscode