Hi Team, We upgraded from ES 6.8.6 to OS 1.2.3. Now we want to upgrade to OpenSearch 2.x. Any indices which are created in ES 6.8.6 should be re-indexed in OS 1.2.3 before we upgrade to OpenSearch 2.x which we are handling for other indices. How to handle .opendistro_security index? Will it be automatically taken care.