How to copy resource from a backup vault in one region into another region?

I successfully backed up resources (EC2 Instances) from one accounts backup vault into a “break glass” account’s backup vault within the same organization. Those backups were transferred within the same region.
However I would like to make a copy of the resources that are in the backup vault of the break glass account into a secondary region.
I know that from the console I can do a one off copy of an instance across regions, but I can’t figure out how to do it with Terraform.