diff --git a/engine/apps/api/serializers/webhook.py b/engine/apps/api/serializers/webhook.py
index 38455712..3d1cd32c 100644
--- a/engine/apps/api/serializers/webhook.py
+++ b/engine/apps/api/serializers/webhook.py
@@ -40,6 +40,7 @@ class WebhookSerializer(serializers.ModelSerializer):
             "id",
             "name",
             "is_webhook_enabled",
+            "is_legacy",
             "team",
             "data",
             "user",
diff --git a/engine/apps/api/tests/test_webhooks.py b/engine/apps/api/tests/test_webhooks.py
index f835c772..94475f41 100644
--- a/engine/apps/api/tests/test_webhooks.py
+++ b/engine/apps/api/tests/test_webhooks.py
@@ -51,6 +51,7 @@ def test_get_list_webhooks(webhook_internal_api_setup, make_user_auth_headers):
             "http_method": "POST",
             "integration_filter": None,
             "is_webhook_enabled": True,
+            "is_legacy": False,
             "last_response_log": {
                 "request_data": "",
                 "request_headers": "",
@@ -91,6 +92,7 @@ def test_get_detail_webhook(webhook_internal_api_setup, make_user_auth_headers):
         "http_method": "POST",
         "integration_filter": None,
         "is_webhook_enabled": True,
+        "is_legacy": False,
         "last_response_log": {
             "request_data": "",
             "request_headers": "",
@@ -136,6 +138,7 @@ def test_create_webhook(mocked_check_webhooks_2_enabled, webhook_internal_api_se
         "http_method": "POST",
         "integration_filter": None,
         "is_webhook_enabled": True,
+        "is_legacy": False,
         "last_response_log": {
             "request_data": "",
             "request_headers": "",
@@ -194,6 +197,7 @@ def test_create_valid_templated_field(
         "http_method": "POST",
         "integration_filter": None,
         "is_webhook_enabled": True,
+        "is_legacy": False,
         "last_response_log": {
             "request_data": "",
             "request_headers": "",
diff --git a/engine/apps/webhooks/migrations/0005_webhook_is_legacy.py b/engine/apps/webhooks/migrations/0005_webhook_is_legacy.py
new file mode 100644
index 00000000..0b53ccab
--- /dev/null
+++ b/engine/apps/webhooks/migrations/0005_webhook_is_legacy.py
@@ -0,0 +1,18 @@
+# Generated by Django 3.2.18 on 2023-04-24 14:07
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('webhooks', '0004_auto_20230418_0109'),
+    ]
+
+    operations = [
+        migrations.AddField(
+            model_name='webhook',
+            name='is_legacy',
+            field=models.BooleanField(default=False, null=True),
+        ),
+    ]
diff --git a/engine/apps/webhooks/models/webhook.py b/engine/apps/webhooks/models/webhook.py
index 97c7bdcc..18f41f18 100644
--- a/engine/apps/webhooks/models/webhook.py
+++ b/engine/apps/webhooks/models/webhook.py
@@ -112,6 +112,7 @@ class Webhook(models.Model):
     trigger_type = models.IntegerField(choices=TRIGGER_TYPES, default=None, null=True)
     is_webhook_enabled = models.BooleanField(null=True, default=True)
     integration_filter = models.JSONField(default=None, null=True, blank=True)
+    is_legacy = models.BooleanField(null=True, default=False)
 
     class Meta:
         unique_together = ("name", "organization")
@@ -156,11 +157,19 @@ class Webhook(models.Model):
         if self.http_method in ["POST", "PUT"]:
             if self.forward_all:
                 request_kwargs["json"] = event_data
+                if self.is_legacy:
+                    request_kwargs["json"] = event_data["alert_payload"]
             elif self.data:
+                context_data = event_data
+                if self.is_legacy:
+                    context_data = {
+                        "alert_payload": event_data.get("alert_payload", {}),
+                        "alert_group_id": event_data.get("alert_group_id"),
+                    }
                 try:
                     rendered_data = apply_jinja_template_for_json(
                         self.data,
-                        event_data,
+                        context_data,
                     )
                     try:
                         request_kwargs["json"] = json.loads(rendered_data)
diff --git a/engine/apps/webhooks/tests/test_webhook.py b/engine/apps/webhooks/tests/test_webhook.py
index 73ee43da..7c7e2450 100644
--- a/engine/apps/webhooks/tests/test_webhook.py
+++ b/engine/apps/webhooks/tests/test_webhook.py
@@ -104,6 +104,35 @@ def test_build_request_kwargs_custom_data(make_organization, make_custom_webhook
     assert request_kwargs == {"headers": {}, "data": "bar"}
 
 
+@pytest.mark.django_db
+def test_build_request_kwargs_is_legacy_custom_data(make_organization, make_custom_webhook):
+    organization = make_organization()
+    webhook = make_custom_webhook(
+        organization=organization,
+        data="{{alert_payload.message}}",
+        forward_all=False,
+        is_legacy=True,
+    )
+    event_data = {"alert_group_id": "bar", "alert_payload": {"message": "the-message"}}
+    request_kwargs = webhook.build_request_kwargs(event_data)
+
+    assert request_kwargs == {"headers": {}, "data": "the-message"}
+
+
+@pytest.mark.django_db
+def test_build_request_kwargs_is_legacy_forward_all(make_organization, make_custom_webhook):
+    organization = make_organization()
+    webhook = make_custom_webhook(
+        organization=organization,
+        forward_all=True,
+        is_legacy=True,
+    )
+    event_data = {"alert_group_id": "bar", "alert_payload": {"message": "the-message"}}
+    request_kwargs = webhook.build_request_kwargs(event_data)
+
+    assert request_kwargs == {"headers": {}, "json": event_data["alert_payload"]}
+
+
 @pytest.mark.django_db
 def test_build_request_kwargs_custom_data_error(make_organization, make_custom_webhook):
     organization = make_organization()
diff --git a/grafana-plugin/src/containers/OutgoingWebhook2Form/OutgoingWebhook2Form.tsx b/grafana-plugin/src/containers/OutgoingWebhook2Form/OutgoingWebhook2Form.tsx
index f953572e..ec43fe54 100644
--- a/grafana-plugin/src/containers/OutgoingWebhook2Form/OutgoingWebhook2Form.tsx
+++ b/grafana-plugin/src/containers/OutgoingWebhook2Form/OutgoingWebhook2Form.tsx
@@ -30,7 +30,7 @@ const OutgoingWebhook2Form = observer((props: OutgoingWebhook2FormProps) => {
 
   const { outgoingWebhook2Store } = store;
 
-  const data = id === 'new' ? { is_webhook_enabled: true } : outgoingWebhook2Store.items[id];
+  const data = id === 'new' ? { is_webhook_enabled: true, is_legacy: false } : outgoingWebhook2Store.items[id];
 
   const handleSubmit = useCallback(
     (data: Partial<OutgoingWebhook2>) => {
@@ -57,11 +57,18 @@ const OutgoingWebhook2Form = observer((props: OutgoingWebhook2FormProps) => {
       <div className={cx('content')} data-testid="test__outgoingWebhook2EditForm">
         <GForm form={form} data={data} onSubmit={handleSubmit} />
         <WithPermissionControlTooltip userAction={UserActions.OutgoingWebhooksWrite}>
-          <Button form={form.name} type="submit">
+          <Button form={form.name} type="submit" disabled={data.is_legacy}>
             {id === 'new' ? 'Create' : 'Update'} Webhook
           </Button>
         </WithPermissionControlTooltip>
       </div>
+      {data.is_legacy ? (
+        <div className={cx('content')}>
+          <Text type="secondary">Legacy migrated webhooks are not editable.</Text>
+        </div>
+      ) : (
+        ''
+      )}
     </Drawer>
   );
 });
diff --git a/grafana-plugin/src/models/outgoing_webhook_2/outgoing_webhook_2.types.ts b/grafana-plugin/src/models/outgoing_webhook_2/outgoing_webhook_2.types.ts
index a8596d39..8eab346e 100644
--- a/grafana-plugin/src/models/outgoing_webhook_2/outgoing_webhook_2.types.ts
+++ b/grafana-plugin/src/models/outgoing_webhook_2/outgoing_webhook_2.types.ts
@@ -17,6 +17,7 @@ export interface OutgoingWebhook2 {
   trigger_template: string;
   last_response_log?: OutgoingWebhook2Response;
   is_webhook_enabled: boolean;
+  is_legacy: boolean;
 }
 
 export interface OutgoingWebhook2Response {