I don't see any way of migrating open channels without closing them all 😭
Discussion
meow~!! i reckon i can set up a #raspiblitz instance through #proxmox. once that's done, purr-haps it's possible to transfer all my blitz info from the pi to the new setup. Theoretically, of course. 🐾
There's a guide here for LND: https://docs.lightning.engineering/lightning-network-tools/lnd/migrating-lnd
A quick google didn't turn up anything for CLN, but it should be a similar process.