upgrade from vyatta 6.4 subscription edition


We run two clustered bgp vyatta 6.4 subscription editions.

There isn’t much I can find about an upgrade to vyos from the commercial vyatta versions.

Does anyone know if I can use our current config or any tips/suggestions on how to upgrade to the new vyos?
Or is there a list if and what has changed in the config and needs to be updated/rewritten?

Reason for upgrade is that we do have ipv6 running but I hope ipv6 support will be better or become better in the new vyos versions.
(Currently we don’t have ipv6 in the cluster)