Just mutual close and if that doesn’t work, just unilateral. You don’t need to coordinate at all

Pretty sure you just initiate a regular channel close, and then start over with a new node once your close-out funds are confirmed on your wallet. When I closed out my Alby Cloud account, that's what the process was. It was very easy.

Are they public routing channels?

As far as I know lightning is set up to just be unilateral in closing for a reason. I would just close them. Then send the on-chain sats to your new node.

When I closed out my channels, this is the suggestion Alby made:

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The best way to close a channel is to do it while it is online, click on the 3 dots on the right (see screenshot), then execute a normal closure (Not a force closure).

The funds on your channels will go to your Savings Balance (which is the onchain side of your Self-custodial wallet).

Then you can withdraw the funds from your Savings Balance just as any other onchain transaction.

Make sure fees aren’t high then do mutual closure. If they are offline, try to message them and see what’s up, or force close.

all in the game 🤙

what/where do you want to migrate?