diff --git a/src/libs/API/parameters/ApproveMoneyRequestParams.ts b/src/libs/API/parameters/ApproveMoneyRequestParams.ts
index 521226aeeff24..d67bc97b7de3d 100644
--- a/src/libs/API/parameters/ApproveMoneyRequestParams.ts
+++ b/src/libs/API/parameters/ApproveMoneyRequestParams.ts
@@ -12,6 +12,14 @@ type ApproveMoneyRequestParams = {
      * }>
      */
     optimisticHoldReportExpenseActionIDs?: string;
+    /**
+     * Stringified JSON object with type of following structure:
+     * Array<{
+     *   optimisticReportActionID: string;
+     *   oldReportActionID: string;
+     * }>
+     */
+    optimisticDuplicatedReportActionIDs?: string;
 };
 
 export default ApproveMoneyRequestParams;
diff --git a/src/libs/API/parameters/PayMoneyRequestParams.ts b/src/libs/API/parameters/PayMoneyRequestParams.ts
index 337c38d7164ea..af93975566087 100644
--- a/src/libs/API/parameters/PayMoneyRequestParams.ts
+++ b/src/libs/API/parameters/PayMoneyRequestParams.ts
@@ -17,6 +17,14 @@ type PayMoneyRequestParams = {
      * }>
      */
     optimisticHoldReportExpenseActionIDs?: string;
+    /**
+     * Stringified JSON object with type of following structure:
+     * Array<{
+     *   optimisticReportActionID: string;
+     *   oldReportActionID: string;
+     * }>
+     */
+    optimisticDuplicatedReportActionIDs?: string;
 };
 
 export default PayMoneyRequestParams;
diff --git a/src/libs/actions/IOU.ts b/src/libs/actions/IOU.ts
index bef8fc4e6f69b..81a4aa5719a62 100644
--- a/src/libs/actions/IOU.ts
+++ b/src/libs/actions/IOU.ts
@@ -10164,6 +10164,93 @@ function getHoldReportActionsAndTransactions(reportID: string | undefined) {
     return {holdReportActions, holdTransactions};
 }
 
+/**
+ * Gets duplicate workflow actions for a partial expense report.
+ * Used when splitting held expenses into a new partial report to maintain action history.
+ *
+ * @param sourceReportID - The ID of the original report to copy actions from
+ * @param targetReportID - The ID of the new partial expense report to copy actions to
+ * @returns A tuple of [optimisticData, successData, failureData, duplicatedReportActionIDs]
+ */
+function getDuplicateActionsForPartialReport(
+    sourceReportID: string | undefined,
+    targetReportID: string | undefined,
+): [
+    Array<OnyxUpdate<typeof ONYXKEYS.COLLECTION.REPORT_ACTIONS>>,
+    Array<OnyxUpdate<typeof ONYXKEYS.COLLECTION.REPORT_ACTIONS>>,
+    Array<OnyxUpdate<typeof ONYXKEYS.COLLECTION.REPORT_ACTIONS>>,
+    OptimisticHoldReportExpenseActionID[],
+] {
+    const optimisticData: Array<OnyxUpdate<typeof ONYXKEYS.COLLECTION.REPORT_ACTIONS>> = [];
+    const successData: Array<OnyxUpdate<typeof ONYXKEYS.COLLECTION.REPORT_ACTIONS>> = [];
+    const failureData: Array<OnyxUpdate<typeof ONYXKEYS.COLLECTION.REPORT_ACTIONS>> = [];
+    const optimisticDuplicatedReportActionIDs: OptimisticHoldReportExpenseActionID[] = [];
+
+    if (!sourceReportID || !targetReportID) {
+        return [optimisticData, successData, failureData, optimisticDuplicatedReportActionIDs];
+    }
+
+    const sourceReportActions = getAllReportActions(sourceReportID);
+
+    // Match the backend's WORKFLOW_ACTIONS list
+    const workflowActionTypes = [
+        CONST.REPORT.ACTIONS.TYPE.SUBMITTED,
+        CONST.REPORT.ACTIONS.TYPE.SUBMITTED_AND_CLOSED,
+        CONST.REPORT.ACTIONS.TYPE.APPROVED,
+        CONST.REPORT.ACTIONS.TYPE.UNAPPROVED,
+        CONST.REPORT.ACTIONS.TYPE.REJECTED,
+        CONST.REPORT.ACTIONS.TYPE.RETRACTED,
+        CONST.REPORT.ACTIONS.TYPE.CLOSED,
+        CONST.REPORT.ACTIONS.TYPE.REOPENED,
+        CONST.REPORT.ACTIONS.TYPE.FORWARDED,
+        CONST.REPORT.ACTIONS.TYPE.TAKE_CONTROL,
+        CONST.REPORT.ACTIONS.TYPE.REROUTE,
+    ] as const;
+
+    const copiedActions: Record<string, OnyxTypes.ReportAction> = {};
+    const copiedActionsSuccess: OnyxCollection<NullishDeep<ReportAction>> = {};
+    const copiedActionsFailure: Record<string, null> = {};
+
+    for (const action of Object.values(sourceReportActions)) {
+        if (action && (workflowActionTypes as readonly string[]).includes(action.actionName)) {
+            const newActionID = NumberUtils.rand64();
+            copiedActions[newActionID] = {
+                ...action,
+                reportActionID: newActionID,
+                reportID: targetReportID,
+                pendingAction: CONST.RED_BRICK_ROAD_PENDING_ACTION.ADD,
+            };
+            copiedActionsSuccess[newActionID] = {
+                pendingAction: null,
+            };
+            copiedActionsFailure[newActionID] = null;
+            optimisticDuplicatedReportActionIDs.push({optimisticReportActionID: newActionID, oldReportActionID: action.reportActionID});
+        }
+    }
+
+    if (Object.keys(copiedActions).length > 0) {
+        optimisticData.push({
+            onyxMethod: Onyx.METHOD.MERGE,
+            key: `${ONYXKEYS.COLLECTION.REPORT_ACTIONS}${targetReportID}`,
+            value: copiedActions,
+        });
+
+        successData.push({
+            onyxMethod: Onyx.METHOD.MERGE,
+            key: `${ONYXKEYS.COLLECTION.REPORT_ACTIONS}${targetReportID}`,
+            value: copiedActionsSuccess,
+        });
+
+        failureData.push({
+            onyxMethod: Onyx.METHOD.MERGE,
+            key: `${ONYXKEYS.COLLECTION.REPORT_ACTIONS}${targetReportID}`,
+            value: copiedActionsFailure,
+        });
+    }
+
+    return [optimisticData, successData, failureData, optimisticDuplicatedReportActionIDs];
+}
+
 function getReportFromHoldRequestsOnyxData(
     chatReport: OnyxTypes.Report,
     iouReport: OnyxEntry<OnyxTypes.Report>,
@@ -10172,6 +10259,7 @@ function getReportFromHoldRequestsOnyxData(
     optimisticHoldReportID: string;
     optimisticHoldActionID: string;
     optimisticHoldReportExpenseActionIDs: OptimisticHoldReportExpenseActionID[];
+    optimisticDuplicatedReportActionIDs: OptimisticHoldReportExpenseActionID[];
     optimisticData: OnyxUpdate[];
     successData: OnyxUpdate[];
     failureData: OnyxUpdate[];
@@ -10389,6 +10477,15 @@ function getReportFromHoldRequestsOnyxData(
         },
     ];
 
+    // Copy submission/approval actions to the new report
+    const [copiedActionsOptimistic, copiedActionsSuccess, copiedActionsFailure, optimisticDuplicatedReportActionIDs] = getDuplicateActionsForPartialReport(
+        iouReport?.reportID,
+        optimisticExpenseReport.reportID,
+    );
+    optimisticData.push(...copiedActionsOptimistic);
+    successData.push(...copiedActionsSuccess);
+    failureData.push(...copiedActionsFailure);
+
     return {
         optimisticData,
         optimisticHoldActionID: optimisticExpenseReportPreview.reportActionID,
@@ -10396,6 +10493,7 @@ function getReportFromHoldRequestsOnyxData(
         successData,
         optimisticHoldReportID: optimisticExpenseReport.reportID,
         optimisticHoldReportExpenseActionIDs,
+        optimisticDuplicatedReportActionIDs,
     };
 }
 
@@ -10715,6 +10813,7 @@ function getPayMoneyRequestParams({
     let optimisticHoldReportID;
     let optimisticHoldActionID;
     let optimisticHoldReportExpenseActionIDs;
+    let optimisticDuplicatedReportActionIDs;
     if (!full) {
         const holdReportOnyxData = getReportFromHoldRequestsOnyxData(chatReport, iouReport, recipient);
 
@@ -10724,6 +10823,7 @@ function getPayMoneyRequestParams({
         optimisticHoldReportID = holdReportOnyxData.optimisticHoldReportID;
         optimisticHoldActionID = holdReportOnyxData.optimisticHoldActionID;
         optimisticHoldReportExpenseActionIDs = JSON.stringify(holdReportOnyxData.optimisticHoldReportExpenseActionIDs);
+        optimisticDuplicatedReportActionIDs = JSON.stringify(holdReportOnyxData.optimisticDuplicatedReportActionIDs);
     }
 
     return {
@@ -10737,6 +10837,7 @@ function getPayMoneyRequestParams({
             optimisticHoldReportID,
             optimisticHoldActionID,
             optimisticHoldReportExpenseActionIDs,
+            optimisticDuplicatedReportActionIDs,
             ...policyParams,
         },
         optimisticData,
@@ -11163,6 +11264,7 @@ function approveMoneyRequest(
     let optimisticHoldReportID;
     let optimisticHoldActionID;
     let optimisticHoldReportExpenseActionIDs;
+    let optimisticDuplicatedReportActionIDs;
     if (!full && !!chatReport && !!expenseReport) {
         const holdReportOnyxData = getReportFromHoldRequestsOnyxData(chatReport, expenseReport, {accountID: expenseReport.ownerAccountID});
 
@@ -11172,6 +11274,7 @@ function approveMoneyRequest(
         optimisticHoldReportID = holdReportOnyxData.optimisticHoldReportID;
         optimisticHoldActionID = holdReportOnyxData.optimisticHoldActionID;
         optimisticHoldReportExpenseActionIDs = JSON.stringify(holdReportOnyxData.optimisticHoldReportExpenseActionIDs);
+        optimisticDuplicatedReportActionIDs = JSON.stringify(holdReportOnyxData.optimisticDuplicatedReportActionIDs);
     }
 
     // Remove duplicates violations if we approve the report
@@ -11214,6 +11317,7 @@ function approveMoneyRequest(
         optimisticHoldReportID,
         optimisticHoldActionID,
         optimisticHoldReportExpenseActionIDs,
+        optimisticDuplicatedReportActionIDs,
     };
 
     playSound(SOUNDS.SUCCESS);