Post Install Migration of KVMs
From Proxmox VE
Migrating KVMs from an older version of ProxMox
Create a new vm (KVM) with the same data as your old one. And create a Harddisk.
If your Harddisk image was on the local storage, just go to the hardware tab, delete the harddisk that you created and choose your old one as harddisk.
If your harddisk image was on a SAN or NAS, make a
dd if=<your raw file> of=/dev/pve1/<image that you created for new VM> bs=1024k
