Lab 4.1: How to restore etcd snapshot on production environment?

I've been going over lab 4.1 and I understand and can successfully backup the etcd snapshot. However, there isn't any clear information on how to actually restore. I've followed the reference to https://kubernetes.io/docs/tasks/administer-cluster/configure-upgrade-etcd/#restoring-an-etcd-cluster and it is a bit light on the steps to actually do it as well. Further, I went to https://github.com/etcd-io/etcd/blob/master/Documentation/op-guide/recovery.md#restoring-a-cluster which is better but this seems a generic page for etcd and not etcd running on kubernetes. I've tried what I found from this page (modified for my cluster)

$ ETCDCTL_API=3 etcdctl snapshot restore snapshot.db \
  --name m1 \
  --initial-cluster m1=http://host1:2380,m2=http://host2:2380,m3=http://host3:2380 \
  --initial-cluster-token etcd-cluster-1 \
  --initial-advertise-peer-urls http://host1:2380
$ ETCDCTL_API=3 etcdctl snapshot restore snapshot.db \
  --name m2 \
  --initial-cluster m1=http://host1:2380,m2=http://host2:2380,m3=http://host3:2380 \
  --initial-cluster-token etcd-cluster-1 \
  --initial-advertise-peer-urls http://host2:2380
$ ETCDCTL_API=3 etcdctl snapshot restore snapshot.db \
  --name m3 \
  --initial-cluster m1=http://host1:2380,m2=http://host2:2380,m3=http://host3:2380 \
  --initial-cluster-token etcd-cluster-1 \
  --initial-advertise-peer-urls http://host3:2380

And then it says to start etcd with new data directories which I can't seem to figure out how to do so I assume I need to edit /etc/kubernetes/manifests/etcd.yaml, but I always end up crashing the etcd pods.

Then I found this somewhere on the web for kubernetes and tried it. It also mentions that you would want to edit /etc/kubernetes/manifests/etcd.yaml to utilize the new data-dir and cluster token, but again, I end up crashing the etcd pods:

etcdctl snapshot restore etcd.db \
--endpoints=https://127.0.0.1:2379 \
--cacert=/etc/kubernetes/pki/etcd/ca.crt \
--cert=/etc/kubernetes/pki/etcd/server.crt \
--key=/etc/kubernetes/pki/etcd/server.key \
--name=controlplane \
--data-dir /var/lib/etcd-from-backup \
--initial-cluster=controlplane=https://127.0.0.1:2380 \
--initial-cluster-token=etcd-cluster-1 \
--initial-advertise-peer-urls=https://127.0.0.1:2380 \

I've got etcd running as a stacked cluster of 3 machines.

So, here are my questions:
1. What are the steps to do an actual restore for an etcd **stacked* cluster.
2. What is this --initial-cluster-token and why is it needed, I don't see it in the default etcd.yaml in manifests?
3. If doing a restore of etcd, shouldn't the DB be shutdown first, if yes, how to shut it down (I must have missed that part in the labs somewhere so thanks in advance). If shutdown not required, then how does this work in an etcd stacked cluster, if restore to one node then what do the other nodes do, wouldn't there be conflicts?
4. Question 3 brings up this: the section above showing how to do restore for kubernetes, shouldn't that be repeated on each node?

Thank you,
Jose