diff --git a/x-pack/solutions/security/plugins/security_solution/public/siem_migrations/common/service/migrations_service_base.test.ts b/x-pack/solutions/security/plugins/security_solution/public/siem_migrations/common/service/migrations_service_base.test.ts
index eede588249688..0ec056998e1b7 100644
--- a/x-pack/solutions/security/plugins/security_solution/public/siem_migrations/common/service/migrations_service_base.test.ts
+++ b/x-pack/solutions/security/plugins/security_solution/public/siem_migrations/common/service/migrations_service_base.test.ts
@@ -12,7 +12,7 @@
  * We use Jest for assertions and mocking. We also use Jest’s fake timers to simulate the polling loop.
  */
 
-import type { CoreStart, Toast } from '@kbn/core/public';
+import type { CoreStart } from '@kbn/core/public';
 import { firstValueFrom } from 'rxjs';
 import { SiemMigrationTaskStatus } from '../../../../common/siem_migrations/constants';
 import type { StartPluginsDependencies } from '../../../types';
@@ -329,88 +329,4 @@ describe('SiemMigrationsServiceBase', () => {
       });
     });
   });
-
-  describe('removeFinishedMigrationsNotification', () => {
-    let mockToastRemove: jest.Mock;
-
-    beforeEach(() => {
-      mockToastRemove = jest.fn();
-      mockNotifications.toasts.remove = mockToastRemove;
-    });
-
-    it('should remove specific migration notification when migrationId is provided', () => {
-      const migrationId = 'mig-1';
-      const mockToast = { id: 'toast-1', title: 'Migration Complete' };
-
-      service.toastsByMigrationId[migrationId] = mockToast as Toast;
-
-      service.removeFinishedMigrationsNotification(migrationId);
-
-      expect(mockToastRemove).toHaveBeenCalledWith(mockToast);
-      expect(service.toastsByMigrationId[migrationId]).toBeUndefined();
-    });
-
-    it('should not call remove when migrationId is provided but no toast exists', () => {
-      const migrationId = 'mig-1';
-
-      service.toastsByMigrationId = {};
-
-      service.removeFinishedMigrationsNotification(migrationId);
-
-      expect(mockToastRemove).not.toHaveBeenCalled();
-    });
-
-    it('should remove all migration notifications when no migrationId is provided', () => {
-      const mockToast1 = { id: 'toast-1', title: 'Migration 1 Complete' };
-      const mockToast2 = { id: 'toast-2', title: 'Migration 2 Complete' };
-
-      service.toastsByMigrationId = {
-        'mig-1': mockToast1 as Toast,
-        'mig-2': mockToast2 as Toast,
-      };
-
-      service.removeFinishedMigrationsNotification();
-
-      expect(mockToastRemove).toHaveBeenCalledTimes(2);
-      expect(mockToastRemove).toHaveBeenCalledWith(mockToast1);
-      expect(mockToastRemove).toHaveBeenCalledWith(mockToast2);
-      expect(service.toastsByMigrationId).toEqual({});
-    });
-
-    it('should not call remove when no migrationId is provided and no toasts exist', () => {
-      service.toastsByMigrationId = {};
-
-      service.removeFinishedMigrationsNotification();
-
-      expect(mockToastRemove).not.toHaveBeenCalled();
-    });
-
-    it('should handle empty toastsByMigrationId object when no migrationId is provided', () => {
-      service.toastsByMigrationId = {};
-
-      service.removeFinishedMigrationsNotification();
-
-      expect(mockToastRemove).not.toHaveBeenCalled();
-      expect(service.toastsByMigrationId).toEqual({});
-    });
-
-    it('should only remove the specific migration toast when migrationId is provided, leaving others intact', () => {
-      const migrationId = 'mig-1';
-      const mockToast1 = { id: 'toast-1', title: 'Migration 1 Complete' };
-      const mockToast2 = { id: 'toast-2', title: 'Migration 2 Complete' };
-
-      service.toastsByMigrationId = {
-        'mig-1': mockToast1 as Toast,
-        'mig-2': mockToast2 as Toast,
-      };
-
-      service.removeFinishedMigrationsNotification(migrationId);
-
-      expect(mockToastRemove).toHaveBeenCalledTimes(1);
-      expect(mockToastRemove).toHaveBeenCalledWith(mockToast1);
-      expect(service.toastsByMigrationId).toEqual({
-        'mig-2': mockToast2,
-      });
-    });
-  });
 });
diff --git a/x-pack/solutions/security/plugins/security_solution/public/siem_migrations/common/service/migrations_service_base.ts b/x-pack/solutions/security/plugins/security_solution/public/siem_migrations/common/service/migrations_service_base.ts
index f574ae573dce1..b4a8c0f57450b 100644
--- a/x-pack/solutions/security/plugins/security_solution/public/siem_migrations/common/service/migrations_service_base.ts
+++ b/x-pack/solutions/security/plugins/security_solution/public/siem_migrations/common/service/migrations_service_base.ts
@@ -7,7 +7,7 @@
 
 import { isEqual } from 'lodash';
 import { BehaviorSubject, distinctUntilChanged, type Observable } from 'rxjs';
-import type { CoreStart, Toast } from '@kbn/core/public';
+import type { CoreStart } from '@kbn/core/public';
 import type { TraceOptions } from '@kbn/elastic-assistant/impl/assistant/types';
 import {
   DEFAULT_ASSISTANT_NAMESPACE,
@@ -43,7 +43,6 @@ export abstract class SiemMigrationsServiceBase<T extends MigrationTaskStats> {
   private isPolling = false;
   public connectorIdStorage: MigrationsStorage<string>;
   public traceOptionsStorage: MigrationsStorage<TraceOptions>;
-  public toastsByMigrationId: Record<string, Toast>;
 
   constructor(
     protected readonly core: CoreStart,
@@ -56,7 +55,7 @@ export abstract class SiemMigrationsServiceBase<T extends MigrationTaskStats> {
     });
 
     this.latestStats$ = new BehaviorSubject<T[] | null>(null);
-    this.toastsByMigrationId = {};
+
     this.plugins.spaces.getActiveSpace().then((space) => {
       this.connectorIdStorage.setSpaceId(space.id);
       this.startPolling();
@@ -204,18 +203,4 @@ export abstract class SiemMigrationsServiceBase<T extends MigrationTaskStats> {
       }
     } while (pendingMigrationIds.length > 0);
   }
-
-  public removeFinishedMigrationsNotification(migrationId?: string) {
-    if (migrationId && this.toastsByMigrationId[migrationId]) {
-      this.core.notifications.toasts.remove(this.toastsByMigrationId[migrationId]);
-      delete this.toastsByMigrationId[migrationId];
-    } else {
-      if (Object.values(this.toastsByMigrationId).length > 0) {
-        Object.values(this.toastsByMigrationId).forEach((toast) => {
-          this.core.notifications.toasts.remove(toast);
-        });
-        this.toastsByMigrationId = {};
-      }
-    }
-  }
 }
diff --git a/x-pack/solutions/security/plugins/security_solution/public/siem_migrations/dashboards/service/dashboard_migrations_service.ts b/x-pack/solutions/security/plugins/security_solution/public/siem_migrations/dashboards/service/dashboard_migrations_service.ts
index 3374f4076da1a..3e4ff858d65ba 100644
--- a/x-pack/solutions/security/plugins/security_solution/public/siem_migrations/dashboards/service/dashboard_migrations_service.ts
+++ b/x-pack/solutions/security/plugins/security_solution/public/siem_migrations/dashboards/service/dashboard_migrations_service.ts
@@ -21,7 +21,7 @@ import * as api from '../api';
 import { getMissingCapabilitiesToast } from '../../common/service/notifications/missing_capabilities_notification';
 import { getNoConnectorToast } from '../../common/service/notifications/no_connector_notification';
 import { SiemMigrationTaskStatus } from '../../../../common/siem_migrations/constants';
-import { getSuccessToast } from './notification/success_notification';
+import { raiseSuccessToast } from './notification/success_notification';
 import type { CapabilitiesLevel, MissingCapability } from '../../common/service/capabilities';
 import { getMissingCapabilitiesChecker } from '../../common/service/capabilities';
 import { requiredDashboardMigrationCapabilities } from './capabilities';
@@ -221,9 +221,7 @@ export class SiemDashboardMigrationsService extends SiemMigrationsServiceBase<Da
   }
 
   protected sendFinishedMigrationNotification(taskStats: DashboardMigrationStats) {
-    const toast = getSuccessToast(taskStats, this.core, this);
-    this.toastsByMigrationId[taskStats.id] = this.core.notifications.toasts.addSuccess(toast);
-    return toast;
+    raiseSuccessToast(taskStats, this.core);
   }
 
   /** Deletes a dashboard migration by its ID, refreshing the stats to remove it from the list */
diff --git a/x-pack/solutions/security/plugins/security_solution/public/siem_migrations/dashboards/service/notification/success_notification.tsx b/x-pack/solutions/security/plugins/security_solution/public/siem_migrations/dashboards/service/notification/success_notification.tsx
index 55a111d6c693f..d679136606826 100644
--- a/x-pack/solutions/security/plugins/security_solution/public/siem_migrations/dashboards/service/notification/success_notification.tsx
+++ b/x-pack/solutions/security/plugins/security_solution/public/siem_migrations/dashboards/service/notification/success_notification.tsx
@@ -13,39 +13,41 @@ import {
   useNavigation,
   NavigationProvider,
 } from '@kbn/security-solution-navigation';
-import type { ToastInput } from '@kbn/core-notifications-browser';
 import { toMountPoint } from '@kbn/react-kibana-mount';
 import { FormattedMessage } from '@kbn/i18n-react';
 import { EuiButton, EuiFlexGroup, EuiFlexItem } from '@elastic/eui';
-import type { SiemDashboardMigrationsService } from '../dashboard_migrations_service';
 import type { DashboardMigrationTaskStats } from '../../../../../common/siem_migrations/model/dashboard_migration.gen';
 
-export const getSuccessToast = (
+export const raiseSuccessToast = (
   migrationStats: DashboardMigrationTaskStats,
-  core: CoreStart,
-  service: SiemDashboardMigrationsService
-): ToastInput => ({
-  color: 'success',
-  iconType: 'check',
-  toastLifeTimeMs: 1000 * 60 * 30, // 30 minutes
-  title: i18n.translate(
-    'xpack.securitySolution.siemMigrations.dashboardsService.polling.successTitle',
-    {
-      defaultMessage: 'Dashboards translation complete.',
-    }
-  ),
-  text: toMountPoint(
-    <NavigationProvider core={core}>
-      <SuccessToastContent migrationStats={migrationStats} service={service} />
-    </NavigationProvider>,
-    core
-  ),
-});
+  core: CoreStart
+): void => {
+  const toast = core.notifications.toasts.addSuccess({
+    color: 'success',
+    iconType: 'check',
+    toastLifeTimeMs: 1000 * 60 * 30, // 30 minutes
+    title: i18n.translate(
+      'xpack.securitySolution.siemMigrations.dashboardsService.polling.successTitle',
+      {
+        defaultMessage: 'Dashboards translation complete.',
+      }
+    ),
+    text: toMountPoint(
+      <NavigationProvider core={core}>
+        <SuccessToastContent
+          migrationStats={migrationStats}
+          dismissHandler={() => core.notifications.toasts.remove(toast)}
+        />
+      </NavigationProvider>,
+      core
+    ),
+  });
+};
 
 const SuccessToastContent: React.FC<{
   migrationStats: DashboardMigrationTaskStats;
-  service: SiemDashboardMigrationsService;
-}> = ({ migrationStats, service }) => {
+  dismissHandler: () => void;
+}> = ({ migrationStats, dismissHandler }) => {
   const { navigateTo, getAppUrl } = useNavigation();
 
   const navParams = useMemo(() => {
@@ -59,9 +61,9 @@ const SuccessToastContent: React.FC<{
         deepLinkId: SecurityPageName.siemMigrationsDashboards,
         path: migrationStats.id,
       });
-      service.removeFinishedMigrationsNotification(migrationStats.id);
+      dismissHandler();
     },
-    [navigateTo, migrationStats.id, service]
+    [navigateTo, migrationStats.id, dismissHandler]
   );
   const url = useMemo(() => getAppUrl(navParams), [getAppUrl, navParams]);
 
diff --git a/x-pack/solutions/security/plugins/security_solution/public/siem_migrations/rules/service/notification/success_notification.test.tsx b/x-pack/solutions/security/plugins/security_solution/public/siem_migrations/rules/service/notification/success_notification.test.tsx
index 902fbd6ba1ef4..7b6dd8b04357c 100644
--- a/x-pack/solutions/security/plugins/security_solution/public/siem_migrations/rules/service/notification/success_notification.test.tsx
+++ b/x-pack/solutions/security/plugins/security_solution/public/siem_migrations/rules/service/notification/success_notification.test.tsx
@@ -9,7 +9,7 @@ import React from 'react';
 import { render } from '@testing-library/react';
 import { coreMock } from '@kbn/core/public/mocks';
 import { useNavigation } from '@kbn/security-solution-navigation';
-import { SuccessToastContent, getSuccessToast } from './success_notification';
+import { SuccessToastContent, raiseSuccessToast } from './success_notification';
 import { getRuleMigrationStatsMock } from '../../__mocks__';
 import { TestProviders } from '../../../../common/mock';
 
@@ -69,7 +69,7 @@ describe('Success Notification', () => {
   describe('getSuccessToast', () => {
     it('returns a toast object with the correct properties', () => {
       const migration = getRuleMigrationStatsMock();
-      const toast = getSuccessToast(migration, coreMock.createStart());
+      const toast = raiseSuccessToast(migration, coreMock.createStart());
 
       expect(toast).toEqual({
         color: 'success',
diff --git a/x-pack/solutions/security/plugins/security_solution/public/siem_migrations/rules/service/notification/success_notification.tsx b/x-pack/solutions/security/plugins/security_solution/public/siem_migrations/rules/service/notification/success_notification.tsx
index f670844e2625e..63df4b4750c51 100644
--- a/x-pack/solutions/security/plugins/security_solution/public/siem_migrations/rules/service/notification/success_notification.tsx
+++ b/x-pack/solutions/security/plugins/security_solution/public/siem_migrations/rules/service/notification/success_notification.tsx
@@ -5,7 +5,7 @@
  * 2.0.
  */
 
-import React, { useMemo, useCallback } from 'react';
+import React from 'react';
 import type { CoreStart } from '@kbn/core-lifecycle-browser';
 import { i18n } from '@kbn/i18n';
 import {
@@ -13,54 +13,47 @@ import {
   useNavigation,
   NavigationProvider,
 } from '@kbn/security-solution-navigation';
-import type { ToastInput } from '@kbn/core-notifications-browser';
 import { toMountPoint } from '@kbn/react-kibana-mount';
 import { FormattedMessage } from '@kbn/i18n-react';
 import { EuiButton, EuiFlexGroup, EuiFlexItem } from '@elastic/eui';
 import type { RuleMigrationStats } from '../../types';
-import type { SiemRulesMigrationsService } from '../rule_migrations_service';
 
-export const getSuccessToast = (
-  migration: RuleMigrationStats,
-  core: CoreStart,
-  service: SiemRulesMigrationsService
-): ToastInput => ({
-  color: 'success',
-  iconType: 'check',
-  toastLifeTimeMs: 1000 * 60 * 30, // 30 minutes
-  title: i18n.translate('xpack.securitySolution.siemMigrations.rulesService.polling.successTitle', {
-    defaultMessage: 'Rules translation complete.',
-  }),
-  text: toMountPoint(
-    <NavigationProvider core={core}>
-      <SuccessToastContent migration={migration} service={service} />
-    </NavigationProvider>,
-    core
-  ),
-});
+export const raiseSuccessToast = (migration: RuleMigrationStats, core: CoreStart) => {
+  const toast = core.notifications.toasts.addSuccess({
+    color: 'success',
+    iconType: 'check',
+    toastLifeTimeMs: 1000 * 60 * 30, // 30 minutes
+    title: i18n.translate(
+      'xpack.securitySolution.siemMigrations.rulesService.polling.successTitle',
+      {
+        defaultMessage: 'Rules translation complete.',
+      }
+    ),
+    text: toMountPoint(
+      <NavigationProvider core={core}>
+        <SuccessToastContent
+          migration={migration}
+          dismissHandler={() => core.notifications.toasts.remove(toast)}
+        />
+      </NavigationProvider>,
+      core
+    ),
+  });
+};
 
 export const SuccessToastContent: React.FC<{
   migration: RuleMigrationStats;
-  service: SiemRulesMigrationsService;
-}> = ({ migration, service }) => {
-  const { navigateTo, getAppUrl } = useNavigation();
+  dismissHandler: () => void;
+}> = ({ migration, dismissHandler }) => {
+  const navigation = { deepLinkId: SecurityPageName.siemMigrationsRules, path: migration.id };
 
-  const navParams = useMemo(() => {
-    return { deepLinkId: SecurityPageName.siemMigrationsRules, path: migration.id };
-  }, [migration.id]);
-
-  const onClick: React.MouseEventHandler = useCallback(
-    (ev) => {
-      ev.preventDefault();
-      navigateTo({
-        deepLinkId: SecurityPageName.siemMigrationsRules,
-        path: migration.id,
-      });
-      service.removeFinishedMigrationsNotification(migration.id);
-    },
-    [navigateTo, migration.id, service]
-  );
-  const url = useMemo(() => getAppUrl(navParams), [getAppUrl, navParams]);
+  const { navigateTo, getAppUrl } = useNavigation();
+  const onClick: React.MouseEventHandler = (ev) => {
+    ev.preventDefault();
+    navigateTo(navigation);
+    dismissHandler();
+  };
+  const url = getAppUrl(navigation);
 
   return (
     <EuiFlexGroup direction="column" alignItems="flexEnd" gutterSize="s">
diff --git a/x-pack/solutions/security/plugins/security_solution/public/siem_migrations/rules/service/rule_migrations_service.ts b/x-pack/solutions/security/plugins/security_solution/public/siem_migrations/rules/service/rule_migrations_service.ts
index e5b3c6cd0ce86..1de46051cd29c 100644
--- a/x-pack/solutions/security/plugins/security_solution/public/siem_migrations/rules/service/rule_migrations_service.ts
+++ b/x-pack/solutions/security/plugins/security_solution/public/siem_migrations/rules/service/rule_migrations_service.ts
@@ -26,7 +26,7 @@ import {
   getNoConnectorToast,
 } from '../../common/service';
 import type { GetMigrationStatsParams, GetMigrationsStatsAllParams } from '../../common/types';
-import { getSuccessToast } from './notification/success_notification';
+import { raiseSuccessToast } from './notification/success_notification';
 import { START_STOP_POLLING_SLEEP_SECONDS } from '../../common/constants';
 
 const CREATE_MIGRATION_BODY_BATCH_SIZE = 50;
@@ -238,8 +238,6 @@ export class SiemRulesMigrationsService extends SiemMigrationsServiceBase<RuleMi
   }
 
   protected sendFinishedMigrationNotification(taskStats: RuleMigrationStats) {
-    const toast = getSuccessToast(taskStats, this.core, this);
-    this.toastsByMigrationId[taskStats.id] = this.core.notifications.toasts.addSuccess(toast);
-    return toast;
+    raiseSuccessToast(taskStats, this.core);
   }
 }