I did the same.
First I took the backup of indices of elastic search 2.2.1 and restore it in 5.6.0
Then again took the backup of indices of elastic search 5.6.0 and trying to restore it in 6.3.0.
I did the same.
First I took the backup of indices of elastic search 2.2.1 and restore it in 5.6.0
Then again took the backup of indices of elastic search 5.6.0 and trying to restore it in 6.3.0.
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