So the _reindex API.
Did you apply the mapping to the new index before you ran the request? See https://www.elastic.co/guide/en/elasticsearch/reference/6.2/docs-reindex.html
So the _reindex API.
Did you apply the mapping to the new index before you ran the request? See https://www.elastic.co/guide/en/elasticsearch/reference/6.2/docs-reindex.html
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