Recover after failed /snap/bin/lxd.migrate with zfs

Inspired by LXD ZFS use existing zfs volumes I’ve attempted to import a container:

root@nas:~# zfs mount nas/vms/containers/dns
root@nas:~# zfs list|grep dns
nas/vms/containers/dns 2.33G 1.76T 1.39G /var/snap/lxd/common/lxd/storage-pools/default/containers/dns

root@nas:~# lxd import dns
Error: The container “dns” does not seem to exist on any storage pool
root@nas:~# lxc list