diff --git a/x-pack/plugins/alerting/server/alert/alert.test.ts b/x-pack/plugins/alerting/server/alert/alert.test.ts
index 8e4807e6203c6..4db40294aa978 100644
--- a/x-pack/plugins/alerting/server/alert/alert.test.ts
+++ b/x-pack/plugins/alerting/server/alert/alert.test.ts
@@ -344,6 +344,7 @@ describe('updateLastScheduledActions()', () => {
           group: 'default',
         },
         flappingHistory: [],
+        maintenanceWindowIds: [],
       },
     });
   });
@@ -357,6 +358,7 @@ describe('updateLastScheduledActions()', () => {
       state: {},
       meta: {
         flappingHistory: [],
+        maintenanceWindowIds: [],
         uuid: expect.any(String),
         lastScheduledActions: {
           date: new Date().toISOString(),
@@ -373,6 +375,7 @@ describe('updateLastScheduledActions()', () => {
     const alert = new Alert<AlertInstanceState, AlertInstanceContext, DefaultActionGroupId>('1', {
       meta: {
         flappingHistory: [],
+        maintenanceWindowIds: [],
         lastScheduledActions: {
           date: new Date(),
           group: 'default',
@@ -387,6 +390,7 @@ describe('updateLastScheduledActions()', () => {
       state: {},
       meta: {
         flappingHistory: [],
+        maintenanceWindowIds: [],
         uuid: expect.any(String),
         lastScheduledActions: {
           date: new Date().toISOString(),
@@ -484,6 +488,7 @@ describe('toJSON', () => {
             group: 'default',
           },
           flappingHistory: [false, true],
+          maintenanceWindowIds: [],
           flapping: false,
           pendingRecoveredCount: 2,
         },
@@ -548,6 +553,7 @@ describe('toRaw', () => {
       meta: {
         flappingHistory: [false, true, true],
         flapping: false,
+        maintenanceWindowIds: [],
         uuid: expect.any(String),
       },
     });
@@ -570,6 +576,7 @@ describe('setFlappingHistory', () => {
           "flappingHistory": Array [
             false,
           ],
+          "maintenanceWindowIds": Array [],
           "uuid": Any<String>,
         },
         "state": Object {},
@@ -602,6 +609,7 @@ describe('setFlapping', () => {
         "meta": Object {
           "flapping": false,
           "flappingHistory": Array [],
+          "maintenanceWindowIds": Array [],
           "uuid": Any<String>,
         },
         "state": Object {},
diff --git a/x-pack/plugins/alerting/server/lib/get_alerts_for_notification.test.ts b/x-pack/plugins/alerting/server/lib/get_alerts_for_notification.test.ts
index 9da07f4707d45..2cb820fabed39 100644
--- a/x-pack/plugins/alerting/server/lib/get_alerts_for_notification.test.ts
+++ b/x-pack/plugins/alerting/server/lib/get_alerts_for_notification.test.ts
@@ -38,6 +38,7 @@ describe('getAlertsForNotification', () => {
           "meta": Object {
             "flapping": true,
             "flappingHistory": Array [],
+            "maintenanceWindowIds": Array [],
             "pendingRecoveredCount": 0,
             "uuid": "uuid-1",
           },
@@ -51,6 +52,7 @@ describe('getAlertsForNotification', () => {
           "meta": Object {
             "flapping": true,
             "flappingHistory": Array [],
+            "maintenanceWindowIds": Array [],
             "pendingRecoveredCount": 0,
             "uuid": "uuid-1",
           },
@@ -60,6 +62,7 @@ describe('getAlertsForNotification', () => {
           "meta": Object {
             "flapping": false,
             "flappingHistory": Array [],
+            "maintenanceWindowIds": Array [],
             "pendingRecoveredCount": 0,
             "uuid": "uuid-2",
           },
@@ -105,6 +108,7 @@ describe('getAlertsForNotification', () => {
           "meta": Object {
             "flapping": true,
             "flappingHistory": Array [],
+            "maintenanceWindowIds": Array [],
             "pendingRecoveredCount": 1,
             "uuid": Any<String>,
           },
@@ -123,18 +127,19 @@ describe('getAlertsForNotification', () => {
       ]
     `);
     expect(alertsWithAnyUUID(currentActiveAlerts)).toMatchInlineSnapshot(`
-          Object {
-            "3": Object {
-              "meta": Object {
-                "flapping": true,
-                "flappingHistory": Array [],
-                "pendingRecoveredCount": 1,
-                "uuid": Any<String>,
-              },
-              "state": Object {},
-            },
-          }
-      `);
+      Object {
+        "3": Object {
+          "meta": Object {
+            "flapping": true,
+            "flappingHistory": Array [],
+            "maintenanceWindowIds": Array [],
+            "pendingRecoveredCount": 1,
+            "uuid": Any<String>,
+          },
+          "state": Object {},
+        },
+      }
+    `);
     expect(Object.values(currentActiveAlerts).map((a) => a.getScheduledActionOptions()))
       .toMatchInlineSnapshot(`
           Array [
@@ -151,6 +156,7 @@ describe('getAlertsForNotification', () => {
           "meta": Object {
             "flapping": true,
             "flappingHistory": Array [],
+            "maintenanceWindowIds": Array [],
             "pendingRecoveredCount": 0,
             "uuid": Any<String>,
           },
@@ -160,6 +166,7 @@ describe('getAlertsForNotification', () => {
           "meta": Object {
             "flapping": false,
             "flappingHistory": Array [],
+            "maintenanceWindowIds": Array [],
             "uuid": Any<String>,
           },
           "state": Object {},
@@ -172,6 +179,7 @@ describe('getAlertsForNotification', () => {
           "meta": Object {
             "flapping": true,
             "flappingHistory": Array [],
+            "maintenanceWindowIds": Array [],
             "pendingRecoveredCount": 0,
             "uuid": Any<String>,
           },
@@ -181,6 +189,7 @@ describe('getAlertsForNotification', () => {
           "meta": Object {
             "flapping": false,
             "flappingHistory": Array [],
+            "maintenanceWindowIds": Array [],
             "uuid": Any<String>,
           },
           "state": Object {},
@@ -231,6 +240,7 @@ describe('getAlertsForNotification', () => {
               false,
               true,
             ],
+            "maintenanceWindowIds": Array [],
             "pendingRecoveredCount": 0,
             "uuid": Any<String>,
           },
@@ -244,6 +254,7 @@ describe('getAlertsForNotification', () => {
               false,
               true,
             ],
+            "maintenanceWindowIds": Array [],
             "pendingRecoveredCount": 0,
             "uuid": Any<String>,
           },
@@ -257,6 +268,7 @@ describe('getAlertsForNotification', () => {
               false,
               true,
             ],
+            "maintenanceWindowIds": Array [],
             "pendingRecoveredCount": 0,
             "uuid": Any<String>,
           },
@@ -274,6 +286,7 @@ describe('getAlertsForNotification', () => {
               false,
               true,
             ],
+            "maintenanceWindowIds": Array [],
             "pendingRecoveredCount": 0,
             "uuid": Any<String>,
           },
@@ -287,6 +300,7 @@ describe('getAlertsForNotification', () => {
               false,
               true,
             ],
+            "maintenanceWindowIds": Array [],
             "pendingRecoveredCount": 0,
             "uuid": Any<String>,
           },
@@ -300,6 +314,7 @@ describe('getAlertsForNotification', () => {
               false,
               true,
             ],
+            "maintenanceWindowIds": Array [],
             "pendingRecoveredCount": 0,
             "uuid": Any<String>,
           },
@@ -345,6 +360,7 @@ describe('getAlertsForNotification', () => {
           "meta": Object {
             "flapping": true,
             "flappingHistory": Array [],
+            "maintenanceWindowIds": Array [],
             "pendingRecoveredCount": 1,
             "uuid": Any<String>,
           },
@@ -372,6 +388,7 @@ describe('getAlertsForNotification', () => {
           "meta": Object {
             "flapping": true,
             "flappingHistory": Array [],
+            "maintenanceWindowIds": Array [],
             "pendingRecoveredCount": 0,
             "uuid": Any<String>,
           },
@@ -381,6 +398,7 @@ describe('getAlertsForNotification', () => {
           "meta": Object {
             "flapping": false,
             "flappingHistory": Array [],
+            "maintenanceWindowIds": Array [],
             "uuid": Any<String>,
           },
           "state": Object {},
@@ -393,6 +411,7 @@ describe('getAlertsForNotification', () => {
           "meta": Object {
             "flapping": true,
             "flappingHistory": Array [],
+            "maintenanceWindowIds": Array [],
             "pendingRecoveredCount": 0,
             "uuid": Any<String>,
           },
@@ -402,6 +421,7 @@ describe('getAlertsForNotification', () => {
           "meta": Object {
             "flapping": false,
             "flappingHistory": Array [],
+            "maintenanceWindowIds": Array [],
             "uuid": Any<String>,
           },
           "state": Object {},