diff --git a/src/libs/ReportUtils.ts b/src/libs/ReportUtils.ts
index 7b226b2e5c8e..990b83ff2a38 100644
--- a/src/libs/ReportUtils.ts
+++ b/src/libs/ReportUtils.ts
@@ -55,7 +55,6 @@ import type {Message, ReportActions} from '@src/types/onyx/ReportAction';
 import type {Comment, TransactionChanges, WaypointCollection} from '@src/types/onyx/Transaction';
 import {isEmptyObject} from '@src/types/utils/EmptyObject';
 import type IconAsset from '@src/types/utils/IconAsset';
-import AccountUtils from './AccountUtils';
 import * as IOU from './actions/IOU';
 import * as PolicyActions from './actions/Policy/Policy';
 import * as store from './actions/ReimbursementAccount/store';
@@ -5981,7 +5980,10 @@ function shouldReportBeInOptionList({
         return false;
     }
 
-    if (report?.participants?.[CONST.ACCOUNT_ID.NOTIFICATIONS] && (!currentUserAccountID || !AccountUtils.isAccountIDOddNumber(currentUserAccountID))) {
+    // We used to use the system DM for A/B testing onboarding tasks, but now only create them in the Concierge chat. We
+    // still need to allow existing users who have tasks in the system DM to see them, but otherwise we don't need to
+    // show that chat
+    if (report?.participants?.[CONST.ACCOUNT_ID.NOTIFICATIONS] && isEmptyReport(report)) {
         return false;
     }
 
@@ -7619,8 +7621,9 @@ function shouldShowMerchantColumn(transactions: Transaction[]) {
 }
 
 /**
- * Whether the report is a system chat or concierge chat, depending on the onboarding report ID or fallbacking
- * to the user's account ID (used for A/B testing purposes).
+ * Whether a given report is used for onboarding tasks. In the past, it could be either the Concierge chat or the system
+ * DM, and we saved the report ID in the user's `onboarding` NVP. As a fallback for users who don't have the NVP, we now
+ * only use the Concierge chat.
  */
 function isChatUsedForOnboarding(optionOrReport: OnyxEntry<Report> | OptionData): boolean {
     // onboarding can be an array for old accounts and accounts created from olddot
@@ -7628,13 +7631,12 @@ function isChatUsedForOnboarding(optionOrReport: OnyxEntry<Report> | OptionData)
         return onboarding.chatReportID === optionOrReport?.reportID;
     }
 
-    return AccountUtils.isAccountIDOddNumber(currentUserAccountID ?? -1)
-        ? isSystemChat(optionOrReport)
-        : (optionOrReport as OptionData)?.isConciergeChat ?? isConciergeChatReport(optionOrReport);
+    return (optionOrReport as OptionData)?.isConciergeChat ?? isConciergeChatReport(optionOrReport);
 }
 
 /**
- * Get the report (system or concierge chat) used for the user's onboarding process.
+ * Get the report used for the user's onboarding process. For most users it is the Concierge chat, however in the past
+ * we also used the system DM for A/B tests.
  */
 function getChatUsedForOnboarding(): OnyxEntry<Report> {
     return Object.values(ReportConnection.getAllReports() ?? {}).find(isChatUsedForOnboarding);
diff --git a/src/libs/actions/Report.ts b/src/libs/actions/Report.ts
index 923d23ca9636..247b7363f8a3 100644
--- a/src/libs/actions/Report.ts
+++ b/src/libs/actions/Report.ts
@@ -8,7 +8,6 @@ import Onyx from 'react-native-onyx';
 import type {PartialDeep, ValueOf} from 'type-fest';
 import type {Emoji} from '@assets/emojis/types';
 import type {FileObject} from '@components/AttachmentModal';
-import AccountUtils from '@libs/AccountUtils';
 import * as ActiveClientManager from '@libs/ActiveClientManager';
 import * as API from '@libs/API';
 import type {
@@ -2164,17 +2163,6 @@ function navigateToConciergeChat(shouldDismissModal = false, checkIfCurrentPageA
     }
 }
 
-/**
- * Navigates to the 1:1 system chat
- */
-function navigateToSystemChat() {
-    const systemChatReport = ReportUtils.getSystemChat();
-
-    if (systemChatReport?.reportID) {
-        Navigation.navigate(ROUTES.REPORT_WITH_ID.getRoute(systemChatReport.reportID));
-    }
-}
-
 /** Add a policy report (workspace room) optimistically and navigate to it. */
 function addPolicyReport(policyReport: ReportUtils.OptimisticChatReport) {
     const createdReportAction = ReportUtils.buildOptimisticCreatedReportAction(CONST.POLICY.OWNER_EMAIL_FAKE);
@@ -3329,13 +3317,7 @@ function completeOnboarding(
     adminsChatReportID?: string,
     onboardingPolicyID?: string,
 ) {
-    const isAccountIDOdd = AccountUtils.isAccountIDOddNumber(currentUserAccountID ?? 0);
-    const targetEmail = isAccountIDOdd ? CONST.EMAIL.NOTIFICATIONS : CONST.EMAIL.CONCIERGE;
-
-    // If the target report isn't opened, the permission field will not exist. So we should add the fallback permission for task report
-    const fallbackPermission = isAccountIDOdd ? [CONST.REPORT.PERMISSIONS.READ] : [CONST.REPORT.PERMISSIONS.READ, CONST.REPORT.PERMISSIONS.WRITE];
-
-    const actorAccountID = PersonalDetailsUtils.getAccountIDsByLogins([targetEmail])[0];
+    const actorAccountID = CONST.ACCOUNT_ID.CONCIERGE;
     const targetChatReport = ReportUtils.getChatByParticipants([actorAccountID, currentUserAccountID]);
     const {reportID: targetChatReportID = '', policyID: targetChatPolicyID = ''} = targetChatReport ?? {};
 
@@ -3388,7 +3370,7 @@ function completeOnboarding(
             targetChatPolicyID,
             CONST.REPORT.NOTIFICATION_PREFERENCE.HIDDEN,
         );
-        const taskCreatedAction = ReportUtils.buildOptimisticCreatedReportAction(targetEmail);
+        const taskCreatedAction = ReportUtils.buildOptimisticCreatedReportAction(CONST.EMAIL.CONCIERGE);
         const taskReportAction = ReportUtils.buildOptimisticTaskCommentReportAction(
             currentTask.reportID,
             task.title,
@@ -3452,7 +3434,6 @@ function completeOnboarding(
                     },
                     isOptimisticReport: true,
                     managerID: currentUserAccountID,
-                    permissions: targetChatReport?.permissions ?? fallbackPermission,
                 },
             },
             {
@@ -4111,7 +4092,6 @@ export {
     saveReportActionDraft,
     deleteReportComment,
     navigateToConciergeChat,
-    navigateToSystemChat,
     addPolicyReport,
     deleteReport,
     navigateToConciergeChatAndDeleteReport,
diff --git a/src/pages/OnboardingPersonalDetails/BaseOnboardingPersonalDetails.tsx b/src/pages/OnboardingPersonalDetails/BaseOnboardingPersonalDetails.tsx
index d2dbd7eff953..4579059c23bc 100644
--- a/src/pages/OnboardingPersonalDetails/BaseOnboardingPersonalDetails.tsx
+++ b/src/pages/OnboardingPersonalDetails/BaseOnboardingPersonalDetails.tsx
@@ -6,7 +6,6 @@ import InputWrapper from '@components/Form/InputWrapper';
 import type {FormOnyxValues} from '@components/Form/types';
 import HeaderWithBackButton from '@components/HeaderWithBackButton';
 import OfflineIndicator from '@components/OfflineIndicator';
-import {useSession} from '@components/OnyxProvider';
 import ScreenWrapper from '@components/ScreenWrapper';
 import Text from '@components/Text';
 import TextInput from '@components/TextInput';
@@ -15,7 +14,6 @@ import useAutoFocusInput from '@hooks/useAutoFocusInput';
 import useLocalize from '@hooks/useLocalize';
 import useResponsiveLayout from '@hooks/useResponsiveLayout';
 import useThemeStyles from '@hooks/useThemeStyles';
-import AccountUtils from '@libs/AccountUtils';
 import * as ErrorUtils from '@libs/ErrorUtils';
 import Navigation from '@libs/Navigation/Navigation';
 import * as ValidationUtils from '@libs/ValidationUtils';
@@ -40,7 +38,6 @@ function BaseOnboardingPersonalDetails({
     const {shouldUseNarrowLayout, onboardingIsMediumOrLargerScreenWidth} = useResponsiveLayout();
     const {inputCallbackRef} = useAutoFocusInput();
     const [shouldValidateOnChange, setShouldValidateOnChange] = useState(false);
-    const {accountID} = useSession();
 
     useEffect(() => {
         Welcome.setOnboardingErrorMessage('');
@@ -76,14 +73,10 @@ function BaseOnboardingPersonalDetails({
             // Only navigate to concierge chat when central pane is visible
             // Otherwise stay on the chats screen.
             if (!shouldUseNarrowLayout && !route.params?.backTo) {
-                if (AccountUtils.isAccountIDOddNumber(accountID ?? 0)) {
-                    Report.navigateToSystemChat();
-                } else {
-                    Report.navigateToConciergeChat();
-                }
+                Report.navigateToConciergeChat();
             }
         },
-        [onboardingPurposeSelected, onboardingAdminsChatReportID, onboardingPolicyID, shouldUseNarrowLayout, route.params?.backTo, accountID],
+        [onboardingPurposeSelected, onboardingAdminsChatReportID, onboardingPolicyID, shouldUseNarrowLayout, route.params?.backTo],
     );
 
     const validate = (values: FormOnyxValues<'onboardingPersonalDetailsForm'>) => {
diff --git a/tests/unit/ReportUtilsTest.ts b/tests/unit/ReportUtilsTest.ts
index 6161fa57f75c..bdff4323579f 100644
--- a/tests/unit/ReportUtilsTest.ts
+++ b/tests/unit/ReportUtilsTest.ts
@@ -884,7 +884,7 @@ describe('ReportUtils', () => {
             expect(ReportUtils.isChatUsedForOnboarding(LHNTestUtils.getFakeReport())).toBeFalsy();
         });
 
-        it('should return true if the user account ID is odd and report is the system chat', async () => {
+        it('should return false if the user account ID is odd and report is the system chat - only the Concierge chat chat should be the onboarding chat for users without the onboarding NVP', async () => {
             const accountID = 1;
 
             await Onyx.multiSet({
@@ -901,7 +901,7 @@ describe('ReportUtils', () => {
                 chatType: CONST.REPORT.CHAT_TYPE.SYSTEM,
             };
 
-            expect(ReportUtils.isChatUsedForOnboarding(report)).toBeTruthy();
+            expect(ReportUtils.isChatUsedForOnboarding(report)).toBeFalsy();
         });
 
         it('should return true if the user account ID is even and report is the concierge chat', async () => {