VM 605 is pinned to saturn, so it cannot survive the conversion, and it has to go before the node leaves the Proxmox cluster — afterwards the provider cannot reach it and every plan errors. Nothing uses it. Its purpose was cloning new Proxmox VMs, Proxmox is being retired, and the one remaining VM definition sets template_name = null explicitly rather than cloning from it. The module default is changed to null for the same reason: it named a template that no longer exists, which would only surface as an apply-time failure for whoever created the next VM. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>