Thanks, but is not what I was looking for. I found the way. No need to shut down and/or copy anything.
  1. Open port 8333 on local LAN side on the existing running node
  2. on new node, open bitcoin-cli and use bitcoin-cli addnode "192.168.0.6:8333" "onetry" Done, the new node it start syncing through LAN from your existing node (already synced), on the fly until is 100%. Once is done, you can remove the local IP and let it to do its job from Bitcoin network. Is really fast and safe. More info here https://chainquery.com/bitcoin-cli/addnode
Solved! You can speed up the production now! we need more nodes! add nodes!
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aaaand... we've just passed the 3000BTC on LN!
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