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 d0f53829a594..d7e81f2c46f6 100644
--- a/mmv1/third_party/terraform/resources/resource_container_cluster.go.erb
+++ b/mmv1/third_party/terraform/resources/resource_container_cluster.go.erb
@@ -2928,6 +2928,9 @@ func expandMaintenancePolicy(d *schema.ResourceData, meta interface{}) *containe
 	maintenancePolicy := l[0].(map[string]interface{})
 
 	if maintenanceExclusions, ok := maintenancePolicy["maintenance_exclusion"]; ok && len(maintenanceExclusions.(*schema.Set).List()) > 0 {
+		for k := range exclusions {
+			delete(exclusions, k)
+		}
 		for _, me := range maintenanceExclusions.(*schema.Set).List() {
 			exclusion := me.(map[string]interface{})
 			exclusions[exclusion["exclusion_name"].(string)] = containerBeta.TimeWindow{
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 9084c3d91242..2df4a371eb8a 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
@@ -1449,7 +1449,7 @@ func TestAccContainerCluster_withMaintenanceExclusionWindow(t *testing.T) {
 				ImportStateVerify:   true,
 			},
 			{
-				Config: testAccContainerCluster_withExclusion_DailyMaintenanceWindow(cluster, "2020-01-01T00:00:00Z", "2020-01-02T00:00:00Z", "2020-05-01T00:00:00Z", "2020-05-02T00:00:00Z"),
+				Config: testAccContainerCluster_withExclusion_DailyMaintenanceWindow(cluster, "2020-01-01T00:00:00Z", "2020-01-02T00:00:00Z"),
 			},
 			{
 				ResourceName:        resourceName,
@@ -3758,7 +3758,7 @@ resource "google_container_cluster" "with_maintenance_exclusion_window" {
 `, clusterName, w1startTime, w1endTime, w1startTime, w1endTime, w2startTime, w2endTime)
 }
 
-func testAccContainerCluster_withExclusion_DailyMaintenanceWindow(clusterName string, w1startTime, w1endTime, w2startTime, w2endTime string) string {
+func testAccContainerCluster_withExclusion_DailyMaintenanceWindow(clusterName string, w1startTime, w1endTime string) string {
 
 	return fmt.Sprintf(`
 resource "google_container_cluster" "with_maintenance_exclusion_window" {
@@ -3775,14 +3775,9 @@ resource "google_container_cluster" "with_maintenance_exclusion_window" {
 		start_time = "%s"
 		end_time = "%s"
 	}
-	maintenance_exclusion {
-		exclusion_name = "holiday data load"
-		start_time = "%s"
-		end_time = "%s"
-	}
  }
 }
-`, clusterName, w1startTime, w1endTime, w2startTime, w2endTime)
+`, clusterName, w1startTime, w1endTime)
 }
 
 func testAccContainerCluster_withIPAllocationPolicy_existingSecondaryRanges(containerNetName string, clusterName string) string {