diff --git a/eslint-suppressions.json b/eslint-suppressions.json
index e47650125fe..8cc4e96a268 100644
--- a/eslint-suppressions.json
+++ b/eslint-suppressions.json
@@ -967,11 +967,6 @@
       "count": 2
     }
   },
-  "web/app/components/base/amplitude/utils.ts": {
-    "ts/no-explicit-any": {
-      "count": 2
-    }
-  },
   "web/app/components/base/app-icon-picker/ImageInput.tsx": {
     "react/no-create-ref": {
       "count": 1
diff --git a/web/app/components/__tests__/external-attribution-recorder.spec.tsx b/web/app/components/__tests__/external-attribution-recorder.spec.tsx
index dbf16cffed6..763d7e3ea47 100644
--- a/web/app/components/__tests__/external-attribution-recorder.spec.tsx
+++ b/web/app/components/__tests__/external-attribution-recorder.spec.tsx
@@ -58,6 +58,23 @@ describe('ExternalAttributionRecorder', () => {
     expect(firstArg?.searchParams?.get('slug')).toBe('get-started-with-dify')
   })
 
+  it('seeds attribution from the redirect_url when auth redirects away from the landing url', async () => {
+    setSearchParams(`redirect_url=${encodeURIComponent('/apps?utm_source=dify_blog&slug=buildaisupportassistantwithdify')}`)
+
+    render(<ExternalAttributionRecorder />)
+
+    await waitFor(() => {
+      expect(getUtmInfoCookie()).toEqual({
+        utm_source: 'dify_blog',
+        slug: 'buildaisupportassistantwithdify',
+      })
+    })
+    expect(mockRememberCreateAppExternalAttribution).toHaveBeenCalledTimes(1)
+    const firstArg = mockRememberCreateAppExternalAttribution.mock.calls[0]?.[0]
+    expect(firstArg?.searchParams?.get('utm_source')).toBe('dify_blog')
+    expect(firstArg?.searchParams?.get('slug')).toBe('buildaisupportassistantwithdify')
+  })
+
   it('does nothing without a utm_source', () => {
     setSearchParams('slug=get-started-with-dify')
 
@@ -67,6 +84,15 @@ describe('ExternalAttributionRecorder', () => {
     expect(mockRememberCreateAppExternalAttribution).not.toHaveBeenCalled()
   })
 
+  it('does nothing for cross-origin redirect_url attribution params', () => {
+    setSearchParams(`redirect_url=${encodeURIComponent('https://example.com/apps?utm_source=dify_blog&slug=get-started-with-dify')}`)
+
+    render(<ExternalAttributionRecorder />)
+
+    expect(getUtmInfoCookie()).toBeNull()
+    expect(mockRememberCreateAppExternalAttribution).not.toHaveBeenCalled()
+  })
+
   it('overwrites a stale utm_info cookie with the latest campaign params', async () => {
     Cookies.set('utm_info', JSON.stringify({ utm_source: 'newsletter', slug: 'launch-week' }))
     setSearchParams('utm_source=dify_blog&slug=get-started-with-dify')
diff --git a/web/app/components/app/create-app-modal/__tests__/index.spec.tsx b/web/app/components/app/create-app-modal/__tests__/index.spec.tsx
index 941f055969c..ccc78f4a9c6 100644
--- a/web/app/components/app/create-app-modal/__tests__/index.spec.tsx
+++ b/web/app/components/app/create-app-modal/__tests__/index.spec.tsx
@@ -195,6 +195,32 @@ describe('CreateAppModal', () => {
     )
   })
 
+  it('waits for create_app tracking before redirecting after blank app creation', async () => {
+    const mockApp: Partial<App> = { id: 'app-1', mode: AppModeEnum.ADVANCED_CHAT, maintainer: 'user-1' }
+    let resolveTracking: (() => void) | undefined
+    mockCreateApp.mockResolvedValue(mockApp as App)
+    mockTrackCreateApp.mockReturnValue(new Promise<void>((resolve) => {
+      resolveTracking = resolve
+    }))
+    renderModal()
+
+    fireEvent.change(screen.getByPlaceholderText('app.newApp.appNamePlaceholder'), {
+      target: { value: 'Tracked App' },
+    })
+    fireEvent.click(screen.getByRole('button', { name: /app\.newApp\.Create/ }))
+
+    await waitFor(() => {
+      expect(mockTrackCreateApp).toHaveBeenCalledWith({ source: 'studio_blank', appMode: AppModeEnum.ADVANCED_CHAT })
+    })
+    expect(mockGetRedirection).not.toHaveBeenCalled()
+
+    resolveTracking?.()
+
+    await waitFor(() => {
+      expect(mockGetRedirection).toHaveBeenCalledWith(mockApp, mockPush, expect.any(Object))
+    })
+  })
+
   it('shows error toast when creation fails', async () => {
     mockCreateApp.mockRejectedValue(new Error('boom'))
     const { onClose } = renderModal()
diff --git a/web/app/components/app/create-app-modal/index.tsx b/web/app/components/app/create-app-modal/index.tsx
index 011e5292167..8ad3ae10757 100644
--- a/web/app/components/app/create-app-modal/index.tsx
+++ b/web/app/components/app/create-app-modal/index.tsx
@@ -95,7 +95,12 @@ function CreateApp({ onClose, onSuccess, onCreateFromTemplate, defaultAppMode }:
         mode: appMode,
       })
 
-      trackCreateApp({ source: 'studio_blank', appMode: app.mode })
+      try {
+        await trackCreateApp({ source: 'studio_blank', appMode: app.mode })
+      }
+      catch {
+        // Analytics should not turn a successful app creation into a failed flow.
+      }
 
       toast.success(t('newApp.appCreated', { ns: 'app' }))
       onSuccess()
diff --git a/web/app/components/base/amplitude/__tests__/utils.spec.ts b/web/app/components/base/amplitude/__tests__/utils.spec.ts
index 87ac9159d06..859d4895c32 100644
--- a/web/app/components/base/amplitude/__tests__/utils.spec.ts
+++ b/web/app/components/base/amplitude/__tests__/utils.spec.ts
@@ -1,10 +1,11 @@
-import { resetUser, setUserId, setUserProperties, trackEvent } from '../utils'
+import { flushEvents, resetUser, setUserId, setUserProperties, trackEvent } from '../utils'
 
 const mockState = vi.hoisted(() => ({
   enabled: true,
 }))
 
 const mockTrack = vi.hoisted(() => vi.fn())
+const mockFlush = vi.hoisted(() => vi.fn())
 const mockSetUserId = vi.hoisted(() => vi.fn())
 const mockIdentify = vi.hoisted(() => vi.fn())
 const mockReset = vi.hoisted(() => vi.fn())
@@ -28,6 +29,7 @@ vi.mock('@/config', () => ({
 
 vi.mock('@amplitude/analytics-browser', () => ({
   track: (...args: unknown[]) => mockTrack(...args),
+  flush: (...args: unknown[]) => mockFlush(...args),
   setUserId: (...args: unknown[]) => mockSetUserId(...args),
   identify: (...args: unknown[]) => mockIdentify(...args),
   reset: (...args: unknown[]) => mockReset(...args),
@@ -41,11 +43,15 @@ describe('amplitude utils', () => {
   })
 
   describe('trackEvent', () => {
-    it('should call amplitude.track when amplitude is enabled', () => {
-      trackEvent('dataset_created', { source: 'wizard' })
+    it('should call amplitude.track and return its result when amplitude is enabled', () => {
+      const trackResult = { promise: Promise.resolve({}) }
+      mockTrack.mockReturnValue(trackResult)
+
+      const result = trackEvent('dataset_created', { source: 'wizard' })
 
       expect(mockTrack).toHaveBeenCalledTimes(1)
       expect(mockTrack).toHaveBeenCalledWith('dataset_created', { source: 'wizard' })
+      expect(result).toBe(trackResult)
     })
 
     it('should not call amplitude.track when amplitude is disabled', () => {
@@ -57,6 +63,26 @@ describe('amplitude utils', () => {
     })
   })
 
+  describe('flushEvents', () => {
+    it('should call amplitude.flush and return its result when amplitude is enabled', () => {
+      const flushResult = { promise: Promise.resolve() }
+      mockFlush.mockReturnValue(flushResult)
+
+      const result = flushEvents()
+
+      expect(mockFlush).toHaveBeenCalledTimes(1)
+      expect(result).toBe(flushResult)
+    })
+
+    it('should not call amplitude.flush when amplitude is disabled', () => {
+      mockState.enabled = false
+
+      flushEvents()
+
+      expect(mockFlush).not.toHaveBeenCalled()
+    })
+  })
+
   describe('setUserId', () => {
     it('should call amplitude.setUserId when amplitude is enabled', () => {
       setUserId('user-123')
@@ -76,7 +102,7 @@ describe('amplitude utils', () => {
 
   describe('setUserProperties', () => {
     it('should build identify event and call amplitude.identify when amplitude is enabled', () => {
-      const properties: Record<string, unknown> = {
+      const properties = {
         role: 'owner',
         seats: 3,
         verified: true,
diff --git a/web/app/components/base/amplitude/utils.ts b/web/app/components/base/amplitude/utils.ts
index 8faa8e852e7..7aecf8c3cad 100644
--- a/web/app/components/base/amplitude/utils.ts
+++ b/web/app/components/base/amplitude/utils.ts
@@ -6,10 +6,16 @@ import { isAmplitudeEnabled } from '@/config'
  * @param eventName Event name
  * @param eventProperties Event properties (optional)
  */
-export const trackEvent = (eventName: string, eventProperties?: Record<string, any>) => {
+export const trackEvent = (eventName: string, eventProperties?: Record<string, unknown>) => {
   if (!isAmplitudeEnabled)
     return
-  amplitude.track(eventName, eventProperties)
+  return amplitude.track(eventName, eventProperties)
+}
+
+export const flushEvents = () => {
+  if (!isAmplitudeEnabled)
+    return
+  return amplitude.flush()
 }
 
 /**
@@ -26,7 +32,7 @@ export const setUserId = (userId: string) => {
  * Set user properties
  * @param properties User properties
  */
-export const setUserProperties = (properties: Record<string, any>) => {
+export const setUserProperties = (properties: Record<string, amplitude.Types.ValidPropertyType>) => {
   if (!isAmplitudeEnabled)
     return
   const identifyEvent = new amplitude.Identify()
diff --git a/web/app/components/external-attribution-recorder.tsx b/web/app/components/external-attribution-recorder.tsx
index 2a659dc8bbf..95418dd6a12 100644
--- a/web/app/components/external-attribution-recorder.tsx
+++ b/web/app/components/external-attribution-recorder.tsx
@@ -10,6 +10,44 @@ const UTM_INFO_COOKIE = 'utm_info'
 const UTM_INFO_COOKIE_EXPIRES_DAYS = 1
 const UTM_INFO_QUERY_KEYS = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_content', 'utm_term', 'slug'] as const
 
+type SearchParamReader = {
+  get: (name: string) => string | null
+}
+
+const normalizeString = (value?: string | null) => {
+  const trimmed = value?.trim()
+  return trimmed || undefined
+}
+
+const getSearchParamValue = (searchParams: SearchParamReader, key: string) =>
+  normalizeString(searchParams.get(key))
+
+const parseRedirectUrlSearchParams = (redirectUrl: string) => {
+  const baseUrl = window.location.origin
+
+  try {
+    const url = new URL(redirectUrl, baseUrl)
+    if (url.origin !== baseUrl)
+      return null
+
+    return url.searchParams
+  }
+  catch {
+    return null
+  }
+}
+
+const resolveAttributionSearchParams = (searchParams: SearchParamReader): SearchParamReader | null => {
+  if (getSearchParamValue(searchParams, 'utm_source'))
+    return searchParams
+
+  const redirectUrl = getSearchParamValue(searchParams, 'redirect_url')
+  if (!redirectUrl)
+    return null
+
+  return parseRedirectUrlSearchParams(redirectUrl)
+}
+
 /**
  * Captures external-campaign params (utm_* + blog `slug`) from the landing URL.
  *
@@ -32,12 +70,16 @@ const ExternalAttributionRecorder = () => {
     if (!IS_CLOUD_EDITION)
       return
 
-    const utmSource = searchParams.get('utm_source')?.trim()
+    const attributionSearchParams = resolveAttributionSearchParams(searchParams)
+    if (!attributionSearchParams)
+      return
+
+    const utmSource = getSearchParamValue(attributionSearchParams, 'utm_source')
     if (!utmSource)
       return
 
     // create_app conversion attribution (utm_source + slug).
-    rememberCreateAppExternalAttribution({ searchParams })
+    rememberCreateAppExternalAttribution({ searchParams: attributionSearchParams })
 
     // Seed the utm_info cookie the registration trackers read. A campaign click always
     // overwrites any previous value, so the most recent blog link wins (last-touch) and
@@ -45,7 +87,7 @@ const ExternalAttributionRecorder = () => {
     // mirrors the create_app attribution refreshed just above.
     const utmInfo: Record<string, string> = {}
     UTM_INFO_QUERY_KEYS.forEach((key) => {
-      const value = searchParams.get(key)?.trim()
+      const value = getSearchParamValue(attributionSearchParams, key)
       if (value)
         utmInfo[key] = value
     })
diff --git a/web/app/signup/set-password/__tests__/page.spec.tsx b/web/app/signup/set-password/__tests__/page.spec.tsx
index 5f8b7260e23..f7cb7fb3ba3 100644
--- a/web/app/signup/set-password/__tests__/page.spec.tsx
+++ b/web/app/signup/set-password/__tests__/page.spec.tsx
@@ -10,7 +10,8 @@ import { useMailRegister } from '@/service/use-common'
 import { getBrowserTimezone } from '@/utils/timezone'
 import ChangePasswordForm from '../page'
 
-const { mockRememberRegistrationSuccess, mockSendGAEvent } = vi.hoisted(() => ({
+const { mockRememberCreateAppExternalAttribution, mockRememberRegistrationSuccess, mockSendGAEvent } = vi.hoisted(() => ({
+  mockRememberCreateAppExternalAttribution: vi.fn(),
   mockRememberRegistrationSuccess: vi.fn(),
   mockSendGAEvent: vi.fn(),
 }))
@@ -41,7 +42,7 @@ vi.mock('@/app/components/base/amplitude/registration-tracking', () => ({
 }))
 
 vi.mock('@/utils/create-app-tracking', () => ({
-  rememberCreateAppExternalAttribution: vi.fn(),
+  rememberCreateAppExternalAttribution: (...args: unknown[]) => mockRememberCreateAppExternalAttribution(...args),
 }))
 
 const mockRegister = vi.fn()
@@ -137,8 +138,8 @@ describe('Signup Set Password Page', () => {
       expect(mockReplace).toHaveBeenCalledWith('/')
     })
 
-    it('should remember the utm event and clear the utm cookie when a utm_info cookie is present', async () => {
-      Cookies.set('utm_info', JSON.stringify({ utm_source: 'twitter' }))
+    it('should remember the utm event with slug and clear the utm cookie when a utm_info cookie is present', async () => {
+      Cookies.set('utm_info', JSON.stringify({ utm_source: 'community', slug: 'partner-launch' }))
       mockRegister.mockResolvedValue({ result: 'success', data: {} })
 
       renderWithQueryClient(<ChangePasswordForm />)
@@ -147,12 +148,16 @@ describe('Signup Set Password Page', () => {
       await waitFor(() => {
         expect(mockRememberRegistrationSuccess).toHaveBeenCalledWith({
           method: 'email',
-          utmInfo: { utm_source: 'twitter' },
+          utmInfo: { utm_source: 'community', slug: 'partner-launch' },
         })
       })
+      expect(mockRememberCreateAppExternalAttribution).toHaveBeenCalledWith({
+        utmInfo: { utm_source: 'community', slug: 'partner-launch' },
+      })
       expect(mockSendGAEvent).toHaveBeenCalledWith('user_registration_success_with_utm', {
         method: 'email',
-        utm_source: 'twitter',
+        utm_source: 'community',
+        slug: 'partner-launch',
       })
       expect(Cookies.get('utm_info')).toBeUndefined()
     })
diff --git a/web/utils/__tests__/create-app-tracking.spec.ts b/web/utils/__tests__/create-app-tracking.spec.ts
index 4939b0dfd3c..acf3fd67927 100644
--- a/web/utils/__tests__/create-app-tracking.spec.ts
+++ b/web/utils/__tests__/create-app-tracking.spec.ts
@@ -1,6 +1,6 @@
 import Cookies from 'js-cookie'
 import { beforeEach, describe, expect, it, vi } from 'vitest'
-import * as amplitude from '@/app/components/base/amplitude'
+import * as amplitude from '@/app/components/base/amplitude/utils'
 import { AppModeEnum } from '@/types/app'
 import {
   buildCreateAppEventPayload,
@@ -29,7 +29,7 @@ describe('create-app-tracking', () => {
       })
     })
 
-    it('should gate on known external sources but keep raw values', () => {
+    it('should accept any non-empty utm_source and keep raw values', () => {
       expect(extractExternalCreateAppAttribution({
         searchParams: new URLSearchParams('utm_source=newsletter'),
       })).toEqual({ utmSource: 'newsletter' })
@@ -41,14 +41,36 @@ describe('create-app-tracking', () => {
         slug: 'launch-week',
       })
 
-      // Unknown sources are still rejected.
       expect(extractExternalCreateAppAttribution({
         searchParams: new URLSearchParams('utm_source=random&slug=x'),
-      })).toBeNull()
+      })).toEqual({
+        utmSource: 'random',
+        slug: 'x',
+      })
     })
   })
 
   describe('rememberCreateAppExternalAttribution', () => {
+    it('should remember unknown utm_source values from the utm cookie', () => {
+      vi.spyOn(Cookies, 'get').mockImplementation(((key?: string) => {
+        return key
+          ? JSON.stringify({
+              utm_source: 'community',
+              slug: 'partner-launch',
+            })
+          : {}
+      }) as typeof Cookies.get)
+
+      expect(rememberCreateAppExternalAttribution()).toEqual({
+        utmSource: 'community',
+        slug: 'partner-launch',
+      })
+      expect(window.sessionStorage.getItem('create_app_external_attribution')).toBe(JSON.stringify({
+        utmSource: 'community',
+        slug: 'partner-launch',
+      }))
+    })
+
     it('should ignore malformed utm cookies', () => {
       vi.spyOn(Cookies, 'get').mockImplementation(((key?: string) => {
         return key ? 'not-json' : {}
@@ -168,6 +190,24 @@ describe('create-app-tracking', () => {
   })
 
   describe('trackCreateApp', () => {
+    it('should flush the create_app event immediately when tracking returns an SDK handle', async () => {
+      vi.spyOn(amplitude, 'trackEvent').mockReturnValue({
+        promise: Promise.resolve({}),
+      } as ReturnType<typeof amplitude.trackEvent>)
+      const flushEventsSpy = vi.spyOn(amplitude, 'flushEvents').mockReturnValue({
+        promise: Promise.resolve(),
+      } as ReturnType<typeof amplitude.flushEvents>)
+
+      await expect(trackCreateApp({ source: 'studio_blank', appMode: AppModeEnum.ADVANCED_CHAT })).resolves.toBeUndefined()
+
+      expect(amplitude.trackEvent).toHaveBeenCalledWith('create_app', {
+        source: 'studio_blank',
+        app_mode: 'chatflow',
+        time: expect.stringMatching(/^\d{2}-\d{2}-\d{2}:\d{2}:\d{2}$/),
+      })
+      expect(flushEventsSpy).toHaveBeenCalledTimes(1)
+    })
+
     it('should track remembered external attribution once before falling back to internal source', () => {
       rememberCreateAppExternalAttribution({
         searchParams: new URLSearchParams('utm_source=newsletter&slug=how-to-build-rag-agent'),
@@ -242,7 +282,7 @@ describe('create-app-tracking', () => {
 
     it('should consume snake_case sessionStorage attribution and map legacy utm_campaign to slug', () => {
       window.sessionStorage.setItem('create_app_external_attribution', JSON.stringify({
-        utm_source: 'twitter',
+        utm_source: 'community',
         utm_campaign: 'launch-week',
       }))
 
@@ -252,7 +292,7 @@ describe('create-app-tracking', () => {
         source: 'external',
         app_mode: 'chatflow',
         time: expect.stringMatching(/^\d{2}-\d{2}-\d{2}:\d{2}:\d{2}$/),
-        utm_source: 'twitter',
+        utm_source: 'community',
         slug: 'launch-week',
       })
       expect(window.sessionStorage.getItem('create_app_external_attribution')).toBeNull()
diff --git a/web/utils/create-app-tracking.ts b/web/utils/create-app-tracking.ts
index 0a7ed96928c..71e53ee8ff9 100644
--- a/web/utils/create-app-tracking.ts
+++ b/web/utils/create-app-tracking.ts
@@ -1,18 +1,18 @@
 import Cookies from 'js-cookie'
-import { trackEvent } from '@/app/components/base/amplitude'
+import { flushEvents, trackEvent } from '@/app/components/base/amplitude/utils'
 import { AppModeEnum } from '@/types/app'
 
 const CREATE_APP_EXTERNAL_ATTRIBUTION_STORAGE_KEY = 'create_app_external_attribution'
 
-const EXTERNAL_UTM_SOURCE_MAP = {
-  'blog': 'blog',
-  'dify_blog': 'blog',
-  'linkedin': 'linkedin',
-  'newsletter': 'blog',
-  'twitter': 'twitter/x',
-  'twitter/x': 'twitter/x',
-  'x': 'twitter/x',
-} as const
+// const EXTERNAL_UTM_SOURCE_MAP = {
+//   'blog': 'blog',
+//   'dify_blog': 'blog',
+//   'linkedin': 'linkedin',
+//   'newsletter': 'blog',
+//   'twitter': 'twitter/x',
+//   'twitter/x': 'twitter/x',
+//   'x': 'twitter/x',
+// } as const
 
 type SearchParamReader = {
   get: (name: string) => string | null
@@ -36,9 +36,6 @@ export type TrackCreateAppParams = {
 }
 
 type ExternalCreateAppAttribution = {
-  // Raw utm_source from the link (e.g. "dify_blog"), reported as-is to stay consistent
-  // with the registration event. EXTERNAL_UTM_SOURCE_MAP is only used to gate which
-  // sources count as external, not to rewrite the reported value.
   utmSource: string
   slug?: string
 }
@@ -75,14 +72,6 @@ const getCookieUtmInfo = () => {
   return parseJSONRecord(Cookies.get('utm_info'))
 }
 
-const mapExternalUtmSource = (value?: string) => {
-  if (!value)
-    return undefined
-
-  const normalized = value.toLowerCase()
-  return EXTERNAL_UTM_SOURCE_MAP[normalized as keyof typeof EXTERNAL_UTM_SOURCE_MAP]
-}
-
 const padTimeValue = (value: number) => String(value).padStart(2, '0')
 
 const formatCreateAppTime = (date: Date) => {
@@ -108,8 +97,7 @@ export const extractExternalCreateAppAttribution = ({
 }) => {
   const rawSource = getSearchParamValue(searchParams, 'utm_source') ?? getObjectStringValue(utmInfo?.utm_source)
 
-  // Gate on known external sources, but keep the raw value for reporting.
-  if (!rawSource || !mapExternalUtmSource(rawSource))
+  if (!rawSource)
     return null
 
   const slug = getSearchParamValue(searchParams, 'slug')
@@ -127,8 +115,7 @@ const readRememberedExternalCreateAppAttribution = (): ExternalCreateAppAttribut
   const attribution = parseJSONRecord(window.sessionStorage.getItem(CREATE_APP_EXTERNAL_ATTRIBUTION_STORAGE_KEY))
   const rawSource = getObjectStringValue(attribution?.utmSource) ?? getObjectStringValue(attribution?.utm_source)
 
-  // Gate on known external sources, but keep the raw value for reporting.
-  if (!rawSource || !mapExternalUtmSource(rawSource))
+  if (!rawSource)
     return null
 
   const slug = getObjectStringValue(attribution?.slug)
@@ -198,7 +185,7 @@ export const buildCreateAppEventPayload = (
   } satisfies Record<string, string>
 }
 
-export const trackCreateApp = (params: TrackCreateAppParams) => {
+export const trackCreateApp = (params: TrackCreateAppParams): Promise<void> | undefined => {
   const externalAttribution = resolveCurrentExternalCreateAppAttribution()
   const payload = buildCreateAppEventPayload(params, externalAttribution)
 
@@ -208,5 +195,16 @@ export const trackCreateApp = (params: TrackCreateAppParams) => {
   if (externalAttribution)
     clearRememberedExternalCreateAppAttribution()
 
-  trackEvent('create_app', payload)
+  const trackingResult = trackEvent('create_app', payload)
+
+  if (!trackingResult)
+    return
+
+  const flushResult = flushEvents()
+
+  const completionPromise = flushResult
+    ? Promise.all([trackingResult.promise, flushResult.promise]).then(() => undefined)
+    : trackingResult.promise.then(() => undefined)
+
+  return completionPromise.catch(() => undefined)
 }