Terraform apply failing with 409 Conflict on genesyscloud_auth_division

Running into a wall with the Genesys Cloud Terraform provider. My script creates a custom division, but subsequent runs fail with a 409 Conflict. The docs say it’s idempotent, but it’s not. I’ve tried adding lifecycle { ignore_changes = [description] } and even forcing a recreation, but the API keeps rejecting the duplicate name.

hcl
resource "genesyscloud_auth_division" "dev_div" {
 name = "Dev Team"
 description = "Dev only"
}

The error says the name already exists. How do I stop Terraform from trying to create it every time?