I've read that Elasticsearch's Nested object are usefull but aren't independant from their root index and
reindex the whole document if reindexed (https://www.elastic.co/blog/managing-relations-inside-elasticsearch).
But on the up to date documentation (6.2) it is said that "nested documents are indexed as separate documents" (https://www.elastic.co/guide/en/elasticsearch/reference/current/nested.html).
So I want to be sure, If I use this structure and reindex a Nested object, does it reindex the root index? Does it reindex the other nested object in the root index?