Which version of Elasticsearch can be migrated to Open search 1.3.6

Hello Team,

I wanted to know which version of Elasticsearch can be migrated to Open search 1.3.6, we are using Graylog with Elasticsearch 7.16 and we wanted to move to OS from ES.

from Graylog it says that anything beyond ES7.10 wont be migrating to Opensearch version of 1.X

Please guide us,

Regards,
SAM

OpenSearch/OpenDistro are AWS run products and differ from the original Elasticsearch and Kibana products that Elastic builds and maintains. You may need to contact them directly for further assistance.

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I believe Graylog are correct, but that is a question for the Opensearch community. I suspect you will need to reindex all data.