diff --git a/src/libs/actions/IOU/SplitTransactionUpdate.ts b/src/libs/actions/IOU/SplitTransactionUpdate.ts
index 8b1c05307ac..f61b5df45ac 100644
--- a/src/libs/actions/IOU/SplitTransactionUpdate.ts
+++ b/src/libs/actions/IOU/SplitTransactionUpdate.ts
@@ -1883,6 +1883,15 @@ function updateSplitTransactionsFromSplitExpensesFlow(params: UpdateSplitTransac
     const transactionThreadReportID = params.firstIOU?.childReportID;
     const transactionThreadReportScreen = Navigation.getReportRouteByID(transactionThreadReportID);
 
+    const removeTransactionThreadReportScreen = () => {
+        requestAnimationFrame(() => {
+            if (!transactionThreadReportScreen?.key) {
+                return;
+            }
+            Navigation.removeScreenByKey(transactionThreadReportScreen.key);
+        });
+    };
+
     // Reset selected transactions in search after saving split expenses
     const searchFullScreenRoutes = navigationRef.getRootState()?.routes.findLast((route) => route.name === NAVIGATORS.SEARCH_FULLSCREEN_NAVIGATOR);
     const lastRoute = searchFullScreenRoutes?.state?.routes?.at(-1);
@@ -1893,38 +1902,30 @@ function updateSplitTransactionsFromSplitExpensesFlow(params: UpdateSplitTransac
         params?.searchContext?.clearSelectedTransactions?.(true);
     }
 
-    if (isSearchPageTopmostFullScreenRoute || !params.transactionReport?.parentReportID) {
-        if (!isSelfDMSplit) {
-            Navigation.navigateBackToLastSuperWideRHPScreen();
-        }
-
-        // After the modal is dismissed, remove the transaction thread report screen
-        // to avoid navigating back to a report removed by the split transaction.
-        requestAnimationFrame(() => {
-            if (!transactionThreadReportScreen?.key) {
-                return;
-            }
-
-            Navigation.removeScreenByKey(transactionThreadReportScreen.key);
-        });
+    if (isSearchPageTopmostFullScreenRoute) {
+        Navigation.navigateBackToLastSuperWideRHPScreen();
+        removeTransactionThreadReportScreen();
 
         return;
     }
 
-    // When the reverse split deletes the expense report, use the backward navigation pattern
+    // When the update deletes the expense report (reverse split or removing the last child after
+    // a sibling was moved to a submitted report), use the backward navigation pattern
     // (dismissToSuperWideRHP + goBack) instead of dismissModalWithReport. This naturally pops
     // stale screens from the stack instead of leaving them behind.
     if (isLastTransactionInReport && fallbackReportID) {
         const backRoute = ROUTES.REPORT_WITH_ID.getRoute(fallbackReportID);
         navigateBackOnDeleteTransaction(backRoute);
+        removeTransactionThreadReportScreen();
 
-        // Remove the transaction thread report screen to avoid navigating back to a removed report
-        requestAnimationFrame(() => {
-            if (!transactionThreadReportScreen?.key) {
-                return;
-            }
-            Navigation.removeScreenByKey(transactionThreadReportScreen.key);
-        });
+        return;
+    }
+
+    if (!params.transactionReport?.parentReportID) {
+        if (!isSelfDMSplit) {
+            Navigation.navigateBackToLastSuperWideRHPScreen();
+        }
+        removeTransactionThreadReportScreen();
 
         return;
     }
@@ -1935,15 +1936,7 @@ function updateSplitTransactionsFromSplitExpensesFlow(params: UpdateSplitTransac
         setPendingSubmitFollowUpAction(CONST.TELEMETRY.SUBMIT_FOLLOW_UP_ACTION.DISMISS_MODAL_AND_OPEN_REPORT, targetReportID);
     }
     Navigation.dismissModalWithReport({reportID: targetReportID});
-
-    // After the modal is dismissed, remove the transaction thread report screen
-    // to avoid navigating back to a report removed by the split transaction.
-    requestAnimationFrame(() => {
-        if (!transactionThreadReportScreen?.key) {
-            return;
-        }
-        Navigation.removeScreenByKey(transactionThreadReportScreen.key);
-    });
+    removeTransactionThreadReportScreen();
 }
 
 export {updateSplitTransactions, updateSplitTransactionsFromSplitExpensesFlow};
diff --git a/tests/actions/IOUTest/SplitTest.ts b/tests/actions/IOUTest/SplitTest.ts
index 9ae03a59f4f..205a6454df5 100644
--- a/tests/actions/IOUTest/SplitTest.ts
+++ b/tests/actions/IOUTest/SplitTest.ts
@@ -2701,7 +2701,7 @@ describe('updateSplitTransactionsFromSplitExpensesFlow', () => {
             transactionData: {
                 reportID: reportID1,
                 originalTransactionID: originalTransaction.transactionID,
-                splitExpenses: [{transactionID: childTransaction.transactionID, amount: 10000, created: DateUtils.getDBTime()}],
+                splitExpenses: [{transactionID: childTransaction.transactionID, amount: 10000, created: DateUtils.getDBTime(), reportID: reportID1}],
                 splitExpensesTotal: undefined,
             },
             searchContext: {
@@ -2836,7 +2836,7 @@ describe('updateSplitTransactionsFromSplitExpensesFlow', () => {
             transactionData: {
                 reportID: reportID2,
                 originalTransactionID: originalTransaction.transactionID,
-                splitExpenses: [{transactionID: childTransaction.transactionID, amount: 10000, created: DateUtils.getDBTime()}],
+                splitExpenses: [{transactionID: childTransaction.transactionID, amount: 10000, created: DateUtils.getDBTime(), reportID: reportID2}],
                 splitExpensesTotal: undefined,
             },
             searchContext: {