reactivate vm´s from a deleted Cluster Config?

Hello,

i´m new with Proxmox, really great !

i run some tests with Proxmox. Created a lot of KVM Linux vm´s with Vlan´s and so on. Space on the local HDD.
Then i install a second Node. After some Tests the second Node dont come back after a reboot, think Hardware Problems.
Then the Master makes some Problems too.
I install a new Node and i need then this new Machine ist the Master.

I found a Tutorial for delete the Cluster, but i forgot a Backup from the old cluster Config.
Now i have a new proxmox Cluster without Vm´s inside.

Its only Test, but is there a way for reactivate
the old KVM vm´s from the first old Cluster in /var/lib/vz/images?

root@openvz:~# cd /var/lib/vz/images/
root@openvz:/var/lib/vz/images# ls
100 101 102 103 104 105 106 107 108 109 110 111 112 113
root@openvz:/var/lib/vz/images# cd 101
root@openvz:/var/lib/vz/images/101# ls
vm-101-disk-1.qcow2
root@openvz:/var/lib/vz/images/101#

How can i reactivate this VM is the new cluster?