Are you in the TG? Itβs easy to add the new node, just apply for membership in the Amboss group and wait for 3 approvals.
As for removing the old one, we can ask nostr:npub18yvpnchj7yaepjk8yz2pn66hfmmup505aqvx0lpyc3aree0g5fyq8clpz3 to do that, since there isnβt a way to edit the list.