diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2fd2d8a3f..f6c786c45 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,7 @@
 ## [Unreleased]
 
 - Fix secret handling `elasticstack_fleet_integration_policy` resource. ([#821](https://github.com/elastic/terraform-provider-elasticstack/pull/821))
+- Fix merge values for `elasticstack_kibana_synthetics_monitor` monitor locations ([#823](https://github.com/elastic/terraform-provider-elasticstack/pull/823)
 
 ## [0.11.8] - 2024-10-02
 
diff --git a/docs/resources/kibana_synthetics_monitor.md b/docs/resources/kibana_synthetics_monitor.md
index 4ab1908bc..1447afd71 100644
--- a/docs/resources/kibana_synthetics_monitor.md
+++ b/docs/resources/kibana_synthetics_monitor.md
@@ -188,4 +188,4 @@ terraform import elasticstack_kibana_synthetics_monitor.my_monitor <space id>/<m
 **NOTE:** Not all monitor fields are supported during the import due-to API limitation.
 Full field support could be implemented after this [kibana issue](https://github.com/elastic/kibana/issues/189906) is resolved.
 
-Currently not supported fields during the import:  `params`, `retest_on_failure`, `http.proxy_header`, `http.username`, `http.password`, `http.check`, `http.response`, `tcp.check_send`, `tcp.check_receive` and monitor type `browser`
+Currently not supported fields during the import:  `params`, `retest_on_failure`, `locations`, `http.proxy_header`, `http.username`, `http.password`, `http.check`, `http.response`, `tcp.check_send`, `tcp.check_receive` and monitor type `browser`
diff --git a/internal/kibana/synthetics/schema.go b/internal/kibana/synthetics/schema.go
index 60db6cd1a..7224edb7c 100644
--- a/internal/kibana/synthetics/schema.go
+++ b/internal/kibana/synthetics/schema.go
@@ -491,12 +491,10 @@ func (v *tfModelV0) toModelV0(ctx context.Context, api *kbapi.SyntheticsMonitor)
 			return nil, dg
 		}
 	}
-	var locLabels []string
+
 	var privateLocLabels []string
 	for _, l := range api.Locations {
-		if l.IsServiceManaged {
-			locLabels = append(locLabels, l.Id)
-		} else {
+		if !l.IsServiceManaged {
 			privateLocLabels = append(privateLocLabels, l.Label)
 		}
 	}
@@ -565,7 +563,7 @@ func (v *tfModelV0) toModelV0(ctx context.Context, api *kbapi.SyntheticsMonitor)
 		Name:             types.StringValue(api.Name),
 		SpaceID:          types.StringValue(api.Namespace),
 		Schedule:         types.Int64Value(schedule),
-		Locations:        StringSliceValue(locLabels),
+		Locations:        v.Locations,
 		PrivateLocations: StringSliceValue(privateLocLabels),
 		Enabled:          types.BoolPointerValue(api.Enabled),
 		Tags:             StringSliceValue(api.Tags),
diff --git a/internal/kibana/synthetics/schema_test.go b/internal/kibana/synthetics/schema_test.go
index dbd03bceb..509d9fb12 100644
--- a/internal/kibana/synthetics/schema_test.go
+++ b/internal/kibana/synthetics/schema_test.go
@@ -132,7 +132,7 @@ func TestToModelV0(t *testing.T) {
 				APMServiceName: "test-service-http",
 				Timeout:        json.Number("30"),
 				Locations: []kbapi.MonitorLocationConfig{
-					{Label: "North America - US East", Id: "us_east", IsServiceManaged: true},
+					{Label: "North America - US East", Id: "us-east4-a", IsServiceManaged: true},
 					{Label: "test private location", IsServiceManaged: false},
 				},
 				Origin:                      "origin",
@@ -678,6 +678,7 @@ func TestToModelV0MergeAttributes(t *testing.T) {
 		{
 			name: "TCP monitor",
 			state: tfModelV0{
+				Locations: []types.String{types.StringValue("us_east")},
 				TCP: &tfTCPMonitorFieldsV0{
 					CheckSend:    types.StringValue("hello"),
 					CheckReceive: types.StringValue("world"),
@@ -685,6 +686,9 @@ func TestToModelV0MergeAttributes(t *testing.T) {
 			},
 			input: kbapi.SyntheticsMonitor{
 				Type: kbapi.Tcp,
+				Locations: []kbapi.MonitorLocationConfig{
+					{Label: "North America - US East", Id: "us-east4-a", IsServiceManaged: true},
+				},
 			},
 			expected: tfModelV0{
 				ID:             types.StringValue("/"),
@@ -693,6 +697,7 @@ func TestToModelV0MergeAttributes(t *testing.T) {
 				Schedule:       types.Int64Value(0),
 				APMServiceName: types.StringValue(""),
 				TimeoutSeconds: types.Int64Value(0),
+				Locations:      []types.String{types.StringValue("us_east")},
 				TCP: &tfTCPMonitorFieldsV0{
 					Host:                  types.StringValue(""),
 					SslVerificationMode:   types.StringValue(""),
diff --git a/templates/resources/kibana_synthetics_monitor.md.tmpl b/templates/resources/kibana_synthetics_monitor.md.tmpl
index a5ba09ee1..32c971d0c 100644
--- a/templates/resources/kibana_synthetics_monitor.md.tmpl
+++ b/templates/resources/kibana_synthetics_monitor.md.tmpl
@@ -36,4 +36,4 @@ Import is supported using the following syntax:
 **NOTE:** Not all monitor fields are supported during the import due-to API limitation.
 Full field support could be implemented after this [kibana issue](https://github.com/elastic/kibana/issues/189906) is resolved.
 
-Currently not supported fields during the import:  `params`, `retest_on_failure`, `http.proxy_header`, `http.username`, `http.password`, `http.check`, `http.response`, `tcp.check_send`, `tcp.check_receive` and monitor type `browser`
+Currently not supported fields during the import:  `params`, `retest_on_failure`, `locations`, `http.proxy_header`, `http.username`, `http.password`, `http.check`, `http.response`, `tcp.check_send`, `tcp.check_receive` and monitor type `browser`