Hi @Walker blake
Check if the vendor's image has any restrictions that prevent it from being copied or moved to another region. Sometimes, images provided by vendors are restricted to certain regions or have specific licensing terms.
Consider using Azure Site Recovery, ASR can replicate your VMs from one region to another and handle the orchestration and management of migration.
reference: https://learn.microsoft.com/en-us/azure/site-recovery/azure-to-azure-move-overview
Get in touch if you need more help with this issue.
--please don't forget to "[Accept the answer]" if the reply is helpful--