Import of CentOS 6.x VM with (luks) full disk encryption -- password doesn't work

Hello everyone,

I have a few KVM VM's that are running CentOS 6.x with full disk encryption enabled. They're currently running a CentOS hosts. I can move these VMs from host to host w/o problem when it's going from a CentOS host to another. I just copy the image (raw) and the xml file, reload, boot, type in password at console, and off I go. I'm in the process of moving to proxmox and any VMs that use encryption have issues. They seem to import fine, but when they boot the (known good) luks password doesn't work. Any idea what would cause this?

Thanks,
Jason