Moving from Citrix XenServer to Proxmox

Hi,

I guess this can be a generic question as well...

I have several para-virtualized VM's under XenServer, and I'd like to move them to KVM. Xen doesn't boot the kernel in the image, in fact, I'm not sure the XenServer VM even has a bootloader. I've tried Clonezilla to move the VM's, and it fails to boot under KVM.

Does anyone have a howto on moving from XenServer to Proxmox?

Thanks,
Gerald