diff --git a/mmv1/templates/terraform/examples/instance_group_named_port_gke.tf.erb b/mmv1/templates/terraform/examples/instance_group_named_port_gke.tf.erb
index 5e2279017ebd..3a4b492eca8a 100644
--- a/mmv1/templates/terraform/examples/instance_group_named_port_gke.tf.erb
+++ b/mmv1/templates/terraform/examples/instance_group_named_port_gke.tf.erb
@@ -1,5 +1,5 @@
 resource "google_compute_instance_group_named_port" "<%= ctx[:primary_resource_id] %>" {
-  group = google_container_cluster.my_cluster.instance_group_urls[0]
+  group = google_container_cluster.my_cluster.node_pool[0].instance_group_urls[0]
   zone = "us-central1-a"
 
   name = "http"
@@ -7,7 +7,7 @@ resource "google_compute_instance_group_named_port" "<%= ctx[:primary_resource_i
 }
 
 resource "google_compute_instance_group_named_port" "<%= ctx[:primary_resource_id] %>s" {
-  group = google_container_cluster.my_cluster.instance_group_urls[0]
+  group = google_container_cluster.my_cluster.node_pool[0].instance_group_urls[0]
   zone = "us-central1-a"
 
   name = "https"
diff --git a/mmv1/third_party/terraform/resources/resource_container_cluster.go.erb b/mmv1/third_party/terraform/resources/resource_container_cluster.go.erb
index a019006b715a..8deb4bc728dd 100644
--- a/mmv1/third_party/terraform/resources/resource_container_cluster.go.erb
+++ b/mmv1/third_party/terraform/resources/resource_container_cluster.go.erb
@@ -960,14 +960,6 @@ func resourceContainerCluster() *schema.Resource {
 				Description: `The IP address of this cluster's Kubernetes master.`,
 			},
 
-			"instance_group_urls": {
-				Type:        schema.TypeList,
-				Computed:    true,
-				Deprecated:  `Please use node_pool.instance_group_urls instead.`,
-				Elem:        &schema.Schema{Type: schema.TypeString},
-				Description: `List of instance group URLs which have been assigned to the cluster.`,
-			},
-
 			"master_version": {
 				Type:        schema.TypeString,
 				Computed:    true,
@@ -1904,14 +1896,6 @@ func resourceContainerClusterRead(d *schema.ResourceData, meta interface{}) erro
 		return err
 	}
 
-	igUrls, err := getInstanceGroupUrlsFromManagerUrls(config, userAgent, cluster.InstanceGroupUrls)
-	if err != nil {
-		return err
-	}
-	if err := d.Set("instance_group_urls", igUrls); err != nil {
-		return err
-	}
-
 	if err := d.Set("vertical_pod_autoscaling", flattenVerticalPodAutoscaling(cluster.VerticalPodAutoscaling)); err != nil {
 		return err
 	}
@@ -3025,30 +3009,6 @@ func containerClusterAwaitRestingState(config *Config, project, location, cluste
 	return state, err
 }
 
-// container engine's API returns the instance group manager's URL instead of the instance
-// group's URL in its responses, while the field is named as if it should have been the group
-// and not the manager. This shim should be supported for backwards compatibility reasons.
-func getInstanceGroupUrlsFromManagerUrls(config *Config, userAgent string, igmUrls []string) ([]string, error) {
-	instanceGroupURLs := make([]string, 0, len(igmUrls))
-	for _, u := range igmUrls {
-		if !instanceGroupManagerURL.MatchString(u) {
-			instanceGroupURLs = append(instanceGroupURLs, u)
-			continue
-		}
-		matches := instanceGroupManagerURL.FindStringSubmatch(u)
-		instanceGroupManager, err := config.NewComputeClient(userAgent).InstanceGroupManagers.Get(matches[1], matches[2], matches[3]).Do()
-		if isGoogleApiErrorWithCode(err, 404) {
-			// The IGM URL is stale; don't include it
-			continue
-		}
-		if err != nil {
-			return nil, fmt.Errorf("Error reading instance group manager returned as an instance group URL: %s", err)
-		}
-		instanceGroupURLs = append(instanceGroupURLs, instanceGroupManager.InstanceGroup)
-	}
-	return instanceGroupURLs, nil
-}
-
 func expandClusterAddonsConfig(configured interface{}) *container.AddonsConfig {
 	l := configured.([]interface{})
 	if len(l) == 0 || l[0] == nil {
diff --git a/mmv1/third_party/terraform/tests/resource_container_cluster_test.go.erb b/mmv1/third_party/terraform/tests/resource_container_cluster_test.go.erb
index 3a54ac5fc568..1ade1b6f74c9 100644
--- a/mmv1/third_party/terraform/tests/resource_container_cluster_test.go.erb
+++ b/mmv1/third_party/terraform/tests/resource_container_cluster_test.go.erb
@@ -3386,7 +3386,7 @@ resource "google_compute_backend_service" "my-backend-service" {
   protocol  = "HTTP"
 
   backend {
-    group = element(google_container_cluster.primary.instance_group_urls, 1)
+    group = element(google_container_cluster.primary.node_pool[0].instance_group_urls, 1)
   }
 
   health_checks = [google_compute_http_health_check.default.self_link]
diff --git a/mmv1/third_party/terraform/website/docs/d/container_cluster.html.markdown b/mmv1/third_party/terraform/website/docs/d/container_cluster.html.markdown
index c03e9341260e..851655d2fc74 100644
--- a/mmv1/third_party/terraform/website/docs/d/container_cluster.html.markdown
+++ b/mmv1/third_party/terraform/website/docs/d/container_cluster.html.markdown
@@ -32,7 +32,7 @@ output "endpoint" {
 }
 
 output "instance_group_urls" {
-  value = data.google_container_cluster.my_cluster.instance_group_urls
+  value = data.google_container_cluster.my_cluster.node_pool[0].instance_group_urls
 }
 
 output "node_config" {
diff --git a/mmv1/third_party/terraform/website/docs/r/container_cluster.html.markdown b/mmv1/third_party/terraform/website/docs/r/container_cluster.html.markdown
index d9b5e5268f33..7a06f2b33761 100644
--- a/mmv1/third_party/terraform/website/docs/r/container_cluster.html.markdown
+++ b/mmv1/third_party/terraform/website/docs/r/container_cluster.html.markdown
@@ -931,9 +931,6 @@ exported:
 
 * `endpoint` - The IP address of this cluster's Kubernetes master.
 
-* `instance_group_urls` - List of instance group URLs which have been assigned
-    to the cluster.
-
 * `label_fingerprint` - The fingerprint of the set of labels for this cluster.
 
 * `maintenance_policy.0.daily_maintenance_window.0.duration` - Duration of the time window, automatically chosen to be