Copy Vault from non-prod to Prod without setting up database configuration and secrets manually

I have setup Vault in HA with raft backend on non-prod cluster. I have already populated KV engine as well as database engine ( oracle with static secrets – rotate passwords).
I would like to migrate the complete setup w/ data from non-prod to prod ( different url and different cluster and different unseal key).
I searched on this forum and found a similar question without lot of details. Please see the link below.

It looks like I can use vault operator migrate command. I couldn’t find the config to point the migrate to two different clusters ( non-prod and prod to perform the migration).
I’m positive I’m missing something.
Please point me in the right direction.