How to restore archive from Graylog 3.x to 4.x

My objective is to restore, archives created in 3.x to to 4.x, As per server.log restore completed successfully but I am unable to search in the new version 4.x.

Restore is successful and searchable in 3.x - 100% no issue same archive when I restore to 4.x no errors no data as well. Any pointers? anyone encountered same issue? What is missing here? Any compatibility issue? Graylog is always good not to report error which is hardest part here :slight_smile:

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