Volterra provider attempting to delete dns_lb_pool before deleting dns_domain

[ghost]

I'm using a DNS domain with a record that uses a lb_record type pointing to a DNS load balancer:

resource "volterra_dns_lb_health_check" "www-juiceshop-vip-health-check" {
  name      = "www-juiceshop-vip-health-check"
  namespace = "system"
  https_health_check {
    health_check_port = "443"
    receive           = ""
    send              = ""
  }
}

resource "volterra_dns_lb_pool" "www-juiceshop-vip" {
  name                = "www-juiceshop-vip"
  namespace           = "system"
  load_balancing_mode = "ROUND_ROBIN"

  a_pool {
    max_answers          = "1"
    health_check {
      name = "${volterra_dns_lb_health_check.www-juiceshop-vip-health-check.name}"
    }
    members {
        ip_endpoint = "${aws_eip.WestBIGIPDataEIP.public_ip}"
        priority    = "10"
        ratio       = "10"
      }
    members {
        ip_endpoint = "${aws_eip.EastBIGIPDataEIP.public_ip}"
        priority    = "10"
        ratio       = "10"
      }
  }
  use_rrset_ttl = true
}
resource "volterra_dns_load_balancer" "www-juiceshop-vip" {
  name        = "juiceshop-vip"
  description = "GSLB for www.juiceshop.vip"
  namespace   = "system"
  record_type = "A"
  rule_list {
    rules {
      pool {
        name      = "www-juiceshop-vip"
      }
      geo_location_label_selector {
        expressions = ["region in (us-west1, us-west2),tier in (staging)"]
      }
      score = "50"
    }
  }
}

resource "volterra_dns_zone" "juiceshop-vip" {
  name = "${var.labDomain}"
  namespace = "system"
  primary {
    rr_set_group {
      metadata {
        description = "Global DNS Names (GSLB)"
        disable = false
        name = "global"
      }
      rr_set {
        ttl = "60"
        lb_record {
          name = "www"
          value {
            name = "juiceshop-vip"
          }
        }
      }
    }
    rr_set_group {
      metadata {
        description = "West Region"
        disable = false
        name = "west"
      }
      rr_set {
        ttl = "60"
        a_record {
          name = "www-west"
          values = ["${aws_eip.WestBIGIPDataEIP.public_ip}"]
        }
      }
      rr_set {
        ttl = "60"
        a_record {
          name = "west-dns"
          values = ["${aws_eip.WestBIGIPServerEIP.public_ip}"]
        }
      }
      rr_set {
        ttl = "60"
        a_record {
          name = "west-bigip"
          values = ["${aws_eip.WestBIGIPMgmtEIP.public_ip}"]
        }
      }
      rr_set {
        ttl = "60"
        a_record {
          name = "west-server"
          values = ["${aws_eip.WestServerEIP.public_ip}"]
        }
      }
      rr_set {
        ttl = "60"
        aaaa_record {
          name = "west-server"
          values = ["${one(aws_network_interface.WestServerENI.ipv6_addresses)}"]
        }
      }
    }
    rr_set_group {
      metadata {
        description = "Management Hosts"
        disable = false
        name = "management"
      }
      rr_set {
        ttl = "60"
        a_record {
          name = "netbox"
          values = ["${aws_eip.DockerEIP.public_ip}"]
        }
      }
      rr_set {
        ttl = "60"
        a_record {
          name = "docker"
          values = ["${aws_eip.DockerEIP.public_ip}"]
        }
      }
      rr_set {
        ttl = "60"
        a_record {
          name = "prometheus"
          values = ["${aws_eip.DockerEIP.public_ip}"]
        }
      }
      rr_set {
        ttl = "60"
        a_record {
          name = "grafana"
          values = ["${aws_eip.DockerEIP.public_ip}"]
        }
      }
    }
    rr_set_group {
      metadata {
        description = "East Region"
        disable = false
        name = "east"
      }
      rr_set {
        ttl = "60"
        a_record {
          name = "www-east"
          values = ["${aws_eip.EastBIGIPDataEIP.public_ip}"]
        }
      }
      rr_set {
        ttl = "60"
        a_record {
          name = "east-dns"
          values = ["${aws_eip.EastBIGIPServerEIP.public_ip}"]
        }
      }
      rr_set {
        ttl = "60"
        a_record {
          name = "east-bigip"
          values = ["${aws_eip.EastBIGIPMgmtEIP.public_ip}"]
        }
      }
      rr_set {
        ttl = "60"
        a_record {
          name = "east-server"
          values = ["${aws_eip.EastServerEIP.public_ip}"]
        }
      }
      rr_set {
        ttl = "60"
        aaaa_record {
          name = "east-server"
          values = ["${one(aws_network_interface.EastServerENI.ipv6_addresses)}"]
        }
      }
    }
  }
}

When I attempt to destroy the environment, I receive this error:

Error: Deleting object from api gateway: Unsuccessful DELETE at URL https://console.ves.volterra.io/api/public/namespaces/system/dns_lb_pools/www-juiceshop-vip, status code 400, body {"code":9,"details":[],"message":"Cannot delete a referenced object. Please remove reference from parent object(s) [volterra-jwmmveys/system/juiceshop-vip] of kind ves.io.schema.dns_load_balancer.Object."}, err %!s(<nil>)

If I delete the DNS domain manually, it completes normally. It looks like the provider is not deleting the DNS domain prior to deleting the pool.

[ghost]

As a workaround, I was able to use the depends_on operator for the volterra_dns_zone.