diff --git a/x-pack/plugins/alerts/server/saved_objects/index.ts b/x-pack/plugins/alerts/server/saved_objects/index.ts
index e401c02d66ad6..7d620adf895e4 100644
--- a/x-pack/plugins/alerts/server/saved_objects/index.ts
+++ b/x-pack/plugins/alerts/server/saved_objects/index.ts
@@ -6,14 +6,14 @@
 
 import { SavedObjectsServiceSetup } from 'kibana/server';
 import mappings from './mappings.json';
-import { getMigrations } from './migrations';
 import { EncryptedSavedObjectsPluginSetup } from '../../../encrypted_saved_objects/server';
 
 export function setupSavedObjects(
   savedObjects: SavedObjectsServiceSetup,
   encryptedSavedObjects: EncryptedSavedObjectsPluginSetup
 ) {
-  const encryptedType = {
+  // Encrypted attributes
+  encryptedSavedObjects.registerType({
     type: 'alert',
     attributesToEncrypt: new Set(['apiKey']),
     attributesToExcludeFromAAD: new Set([
@@ -22,16 +22,12 @@ export function setupSavedObjects(
       'mutedInstanceIds',
       'updatedBy',
     ]),
-  };
-
-  // Encrypted attributes
-  encryptedSavedObjects.registerType(encryptedType);
+  });
 
   savedObjects.registerType({
     name: 'alert',
     hidden: true,
     namespaceType: 'single',
-    migrations: getMigrations(encryptedSavedObjects, encryptedType),
     mappings: mappings.alert,
   });
 }
diff --git a/x-pack/plugins/alerts/server/saved_objects/migrations.test.ts b/x-pack/plugins/alerts/server/saved_objects/migrations.test.ts
deleted file mode 100644
index c0344f49f11e1..0000000000000
--- a/x-pack/plugins/alerts/server/saved_objects/migrations.test.ts
+++ /dev/null
@@ -1,114 +0,0 @@
-/*
- * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
- * or more contributor license agreements. Licensed under the Elastic License;
- * you may not use this file except in compliance with the Elastic License.
- */
-import uuid from 'uuid';
-import { getMigrations } from './migrations';
-import { RawAlert } from '../types';
-import { SavedObjectUnsanitizedDoc } from 'kibana/server';
-import { encryptedSavedObjectsMock } from '../../../encrypted_saved_objects/server/mocks';
-import { migrationMocks } from 'src/core/server/mocks';
-
-const { log } = migrationMocks.createContext();
-const encryptedSavedObjectsSetup = encryptedSavedObjectsMock.createSetup();
-
-const encryptedType = {
-  type: 'alert',
-  attributesToEncrypt: new Set(['apiKey']),
-  attributesToExcludeFromAAD: new Set([
-    'scheduledTaskId',
-    'muteAll',
-    'mutedInstanceIds',
-    'updatedBy',
-  ]),
-};
-
-describe('7.9.0', () => {
-  beforeEach(() => {
-    jest.resetAllMocks();
-    encryptedSavedObjectsSetup.createMigration.mockImplementation(
-      (shouldMigrateWhenPredicate, migration) => migration
-    );
-  });
-
-  test('changes nothing on alerts by other plugins', () => {
-    const migration790 = getMigrations(encryptedSavedObjectsSetup, encryptedType)['7.9.0'];
-    const alert = getMockData({});
-    expect(migration790(alert, { log })).toMatchObject(alert);
-
-    expect(encryptedSavedObjectsSetup.createMigration).toHaveBeenCalledWith(
-      expect.any(Function),
-      expect.any(Function),
-      encryptedType,
-      encryptedType
-    );
-  });
-
-  test('migrates the consumer for alerting', () => {
-    const migration790 = getMigrations(encryptedSavedObjectsSetup, encryptedType)['7.9.0'];
-    const alert = getMockData({
-      consumer: 'alerting',
-    });
-    expect(migration790(alert, { log })).toMatchObject({
-      ...alert,
-      attributes: {
-        ...alert.attributes,
-        consumer: 'alerts',
-      },
-    });
-  });
-
-  test('migrates the consumer for metrics', () => {
-    const migration790 = getMigrations(encryptedSavedObjectsSetup, encryptedType)['7.9.0'];
-    const alert = getMockData({
-      consumer: 'metrics',
-    });
-    expect(migration790(alert, { log })).toMatchObject({
-      ...alert,
-      attributes: {
-        ...alert.attributes,
-        consumer: 'infrastructure',
-      },
-    });
-  });
-});
-
-function getMockData(
-  overwrites: Record<string, unknown> = {}
-): SavedObjectUnsanitizedDoc<RawAlert> {
-  return {
-    attributes: {
-      enabled: true,
-      name: 'abc',
-      tags: ['foo'],
-      alertTypeId: '123',
-      consumer: 'bar',
-      apiKey: '',
-      apiKeyOwner: '',
-      schedule: { interval: '10s' },
-      throttle: null,
-      params: {
-        bar: true,
-      },
-      muteAll: false,
-      mutedInstanceIds: [],
-      createdBy: new Date().toISOString(),
-      updatedBy: new Date().toISOString(),
-      createdAt: new Date().toISOString(),
-      actions: [
-        {
-          group: 'default',
-          actionRef: '1',
-          actionTypeId: '1',
-          params: {
-            foo: true,
-          },
-        },
-      ],
-      ...overwrites,
-    },
-    id: uuid.v4(),
-    type: 'alert',
-  };
-}
diff --git a/x-pack/plugins/alerts/server/saved_objects/migrations.ts b/x-pack/plugins/alerts/server/saved_objects/migrations.ts
deleted file mode 100644
index 10dd458c5666a..0000000000000
--- a/x-pack/plugins/alerts/server/saved_objects/migrations.ts
+++ /dev/null
@@ -1,60 +0,0 @@
-/*
- * Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
- * or more contributor license agreements. Licensed under the Elastic License;
- * you may not use this file except in compliance with the Elastic License.
- */
-import {
-  SavedObjectMigrationMap,
-  SavedObjectUnsanitizedDoc,
-  SavedObjectMigrationFn,
-} from '../../../../../src/core/server';
-import { RawAlert } from '../types';
-import {
-  EncryptedSavedObjectsPluginSetup,
-  EncryptedSavedObjectTypeRegistration,
-} from '../../../encrypted_saved_objects/server';
-
-export function getMigrations(
-  encryptedSavedObjects: EncryptedSavedObjectsPluginSetup,
-  currentType: EncryptedSavedObjectTypeRegistration
-): SavedObjectMigrationMap {
-  return {
-    '7.9.0': changeAlertingConsumer(encryptedSavedObjects, currentType),
-  };
-}
-
-/**
- * In v7.9 we made a couple of changes:
- * 1. We changed the Alerting plugin so it uses the `consumer` value of `alerts`
- * Prior to that we were using `alerting` and we need to keep these in sync for RBAC
- * 2. We aligned the metrics alerts with the feature that needs to grant them privileges
- * so their consumer field has changed from `metrics` to `infrastructure`
- */
-function changeAlertingConsumer(
-  encryptedSavedObjects: EncryptedSavedObjectsPluginSetup,
-  currentType: EncryptedSavedObjectTypeRegistration
-): SavedObjectMigrationFn<RawAlert, RawAlert> {
-  const consumerMigration = new Map<string, string>();
-  consumerMigration.set('alerting', 'alerts');
-  consumerMigration.set('metrics', 'infrastructure');
-
-  return encryptedSavedObjects.createMigration<RawAlert, RawAlert>(
-    function shouldbeMigrated(doc): doc is SavedObjectUnsanitizedDoc<RawAlert> {
-      return consumerMigration.has(doc.attributes.consumer);
-    },
-    (doc: SavedObjectUnsanitizedDoc<RawAlert>): SavedObjectUnsanitizedDoc<RawAlert> => {
-      const {
-        attributes: { consumer },
-      } = doc;
-      return {
-        ...doc,
-        attributes: {
-          ...doc.attributes,
-          consumer: consumerMigration.get(consumer) ?? consumer,
-        },
-      };
-    },
-    // type hasn't changed as the field we're updating is not an encrupted one
-    currentType
-  );
-}