The 12 word recovery is if you need to re-download the wallet, or force close channels you control the key to the on chain address. As far as my understanding goes.
Discussion
Also note, you are going to likely want to then transact the sats back to your main on chain BTC wallet. Leaving the receiving capacity open for future receiving, then when it gets full move to the on chain address.
Am I missing anything fellow nostriches?
