Background of the issue:
I am working on a site under development and trying to import articles with their translations using WPML. I am following the 'Importing Multiple Languages with WP All Import and WPML' documentation.
Symptoms:
Documentation about importing articles with their translation is shown only when a new import is made.
Questions:
Are there any differences between existing articles and a recurring import?
Are there any points of attention, particularly in step 4, when choosing a unique identifier?