diff --git a/cluster-autoscaler/cloudprovider/gce/autoscaling_gce_client.go b/cluster-autoscaler/cloudprovider/gce/autoscaling_gce_client.go
index 4dde60940700..2bb0db5b99a6 100644
--- a/cluster-autoscaler/cloudprovider/gce/autoscaling_gce_client.go
+++ b/cluster-autoscaler/cloudprovider/gce/autoscaling_gce_client.go
@@ -405,11 +405,11 @@ func externalToInternalInstance(gceInstance *gce.Instance, loggingQuota *klogx.Q
 			},
 		},
 		NumericId: gceInstance.Id,
-		Igm:       createIgmRef(gceInstance, loggingQuota),
+		Igm:       createIgmRef(gceInstance, ref.Project, loggingQuota),
 	}, nil
 }
 
-func createIgmRef(gceInstance *gce.Instance, loggingQuota *klogx.Quota) GceRef {
+func createIgmRef(gceInstance *gce.Instance, project string, loggingQuota *klogx.Quota) GceRef {
 	createdBy := ""
 	for _, item := range gceInstance.Metadata.Items {
 		if item.Key == "created-by" && item.Value != nil {
@@ -425,6 +425,9 @@ func createIgmRef(gceInstance *gce.Instance, loggingQuota *klogx.Quota) GceRef {
 		klogx.V(5).UpTo(loggingQuota).Infof("Unable to parse IGM for %v because of %v", gceInstance.SelfLink, err)
 		return GceRef{}
 	}
+	// project is overwritten to make it compatible with CA mig refs which uses project
+	// name instead of project number. igm url has project number not project name.
+	igmRef.Project = project
 	return igmRef
 }
 
diff --git a/cluster-autoscaler/cloudprovider/gce/autoscaling_gce_client_test.go b/cluster-autoscaler/cloudprovider/gce/autoscaling_gce_client_test.go
index b5e829ef2b7d..136494e83ce9 100644
--- a/cluster-autoscaler/cloudprovider/gce/autoscaling_gce_client_test.go
+++ b/cluster-autoscaler/cloudprovider/gce/autoscaling_gce_client_test.go
@@ -925,7 +925,7 @@ func TestFetchAllInstances(t *testing.T) {
 						Status: &cloudprovider.InstanceStatus{State: cloudprovider.InstanceCreating},
 					},
 					NumericId: 11,
-					Igm:       GceRef{"893226960234", "zones", "test-igm1-grp"},
+					Igm:       GceRef{"myprojid", "zones", "test-igm1-grp"},
 				},
 			},
 		},
@@ -987,7 +987,7 @@ func TestFetchAllInstances(t *testing.T) {
 						Status: &cloudprovider.InstanceStatus{State: cloudprovider.InstanceRunning},
 					},
 					NumericId: 10,
-					Igm:       GceRef{"893226960234", "zones", "test-igm1-grp"},
+					Igm:       GceRef{"myprojid", "zones", "test-igm1-grp"},
 				},
 				{
 					Instance: cloudprovider.Instance{
@@ -995,7 +995,7 @@ func TestFetchAllInstances(t *testing.T) {
 						Status: &cloudprovider.InstanceStatus{State: cloudprovider.InstanceRunning},
 					},
 					NumericId: 11,
-					Igm:       GceRef{"893226960234", "zones", "test-igm1-grp"},
+					Igm:       GceRef{"myprojid", "zones", "test-igm1-grp"},
 				},
 			},
 		},
@@ -1084,7 +1084,7 @@ func TestFetchAllInstances(t *testing.T) {
 						Status: &cloudprovider.InstanceStatus{State: cloudprovider.InstanceRunning},
 					},
 					NumericId: 10,
-					Igm:       GceRef{"893226960234", "zones", "test-igm1-grp"},
+					Igm:       GceRef{"myprojid", "zones", "test-igm1-grp"},
 				},
 				{
 					Instance: cloudprovider.Instance{
@@ -1092,7 +1092,7 @@ func TestFetchAllInstances(t *testing.T) {
 						Status: &cloudprovider.InstanceStatus{State: cloudprovider.InstanceRunning},
 					},
 					NumericId: 11,
-					Igm:       GceRef{"893226960234", "zones", "test-igm2-grp"},
+					Igm:       GceRef{"myprojid", "zones", "test-igm2-grp"},
 				},
 				{
 					Instance: cloudprovider.Instance{
@@ -1100,7 +1100,7 @@ func TestFetchAllInstances(t *testing.T) {
 						Status: &cloudprovider.InstanceStatus{State: cloudprovider.InstanceRunning},
 					},
 					NumericId: 12,
-					Igm:       GceRef{"893226960234", "zones", "test-igm1-grp"},
+					Igm:       GceRef{"myprojid", "zones", "test-igm1-grp"},
 				},
 				{
 					Instance: cloudprovider.Instance{
@@ -1108,7 +1108,7 @@ func TestFetchAllInstances(t *testing.T) {
 						Status: &cloudprovider.InstanceStatus{State: cloudprovider.InstanceRunning},
 					},
 					NumericId: 13,
-					Igm:       GceRef{"893226960234", "zones", "test-igm1-grp"},
+					Igm:       GceRef{"myprojid", "zones", "test-igm1-grp"},
 				},
 				{
 					Instance: cloudprovider.Instance{
@@ -1116,7 +1116,7 @@ func TestFetchAllInstances(t *testing.T) {
 						Status: &cloudprovider.InstanceStatus{State: cloudprovider.InstanceRunning},
 					},
 					NumericId: 14,
-					Igm:       GceRef{"893226960234", "zones", "test-igm2-grp"},
+					Igm:       GceRef{"myprojid", "zones", "test-igm2-grp"},
 				},
 				{
 					Instance: cloudprovider.Instance{
@@ -1124,7 +1124,7 @@ func TestFetchAllInstances(t *testing.T) {
 						Status: &cloudprovider.InstanceStatus{State: cloudprovider.InstanceRunning},
 					},
 					NumericId: 15,
-					Igm:       GceRef{"893226960234", "zones", "test-igm1-grp"},
+					Igm:       GceRef{"myprojid", "zones", "test-igm1-grp"},
 				},
 			},
 		},
@@ -1228,7 +1228,7 @@ func TestExternalToInternalInstance(t *testing.T) {
 					Status: &cloudprovider.InstanceStatus{State: cloudprovider.InstanceRunning},
 				},
 				NumericId: 10,
-				Igm:       GceRef{"893226960234", "zones", "test-igm1-grp"},
+				Igm:       GceRef{"myprojid", "zones", "test-igm1-grp"},
 			},
 		},
 	}