diff --git a/mhd_oms/src/main/java/com/mhd/oms/domain/executionInMaterialDetail/repository/persistence/ExecutionInMaterialDetailImpl.java b/mhd_oms/src/main/java/com/mhd/oms/domain/executionInMaterialDetail/repository/persistence/ExecutionInMaterialDetailImpl.java
index 986c5b728..ff92da3ad 100644
--- a/mhd_oms/src/main/java/com/mhd/oms/domain/executionInMaterialDetail/repository/persistence/ExecutionInMaterialDetailImpl.java
+++ b/mhd_oms/src/main/java/com/mhd/oms/domain/executionInMaterialDetail/repository/persistence/ExecutionInMaterialDetailImpl.java
@@ -260,8 +260,11 @@ public class ExecutionInMaterialDetailImpl extends ServiceImpl<ExecutionInMateri
             }
             inMaterialDetailList.add(inMaterialDetail);
         }
-        //需修改的物料明细id集合不为空
-        if (!CollectionUtils.isEmpty(inMaterialDetailDbList) && !CollectionUtils.isEmpty(materialDetailIdsByUpdate)){
+        // 库内存在有效明细即做对账软删：提交列表未覆盖的库内行视为用户已删除。
+        // 修复：此前还要求 materialDetailIdsByUpdate 非空(至少一行走更新分支)，
+        // "删光旧物料全部换新物料"时该集合为空，旧行漏软删(del_flag仍=1)，
+        // 下发后计划数量=旧+新叠加。removeAll(空列表)为安全no-op
+        if (!CollectionUtils.isEmpty(inMaterialDetailDbList)){
             List<Long> materialDetailIdsByDb = inMaterialDetailDbList.stream().map(ExecutionInMaterialDetail::getMaterialDetailId).collect(Collectors.toList());
             //过滤需要修改的id集合
             materialDetailIdsByDb.removeAll(materialDetailIdsByUpdate);
diff --git a/mhd_oms/src/main/java/com/mhd/oms/domain/executionOutMaterialDetail/repository/persistence/ExecutionOutMaterialDetailImpl.java b/mhd_oms/src/main/java/com/mhd/oms/domain/executionOutMaterialDetail/repository/persistence/ExecutionOutMaterialDetailImpl.java
index 7b7180d12..55f104899 100644
--- a/mhd_oms/src/main/java/com/mhd/oms/domain/executionOutMaterialDetail/repository/persistence/ExecutionOutMaterialDetailImpl.java
+++ b/mhd_oms/src/main/java/com/mhd/oms/domain/executionOutMaterialDetail/repository/persistence/ExecutionOutMaterialDetailImpl.java
@@ -217,8 +217,11 @@ public class ExecutionOutMaterialDetailImpl extends ServiceImpl<ExecutionOutMate
             }
             outMaterialDetailList.add(outMaterialDetail);
         }
-        //需修改的物料明细id集合不为空
-        if (!CollectionUtils.isEmpty(materialDetailIdsByUpdate)){
+        // 库内存在明细即做对账软删：提交列表未覆盖的库内行视为用户已删除。
+        // 修复：此前要求 materialDetailIdsByUpdate 非空(至少一行走更新分支)，
+        // "删光旧物料全部换新物料"时该集合为空，旧行漏软删(del_flag仍=1)，
+        // 下发后计划数量=旧+新叠加。removeAll(空列表)为安全no-op
+        if (!CollectionUtils.isEmpty(outMaterialDetailDbList)){
             List<Long> materialDetailIdsByDb = outMaterialDetailDbList.stream().map(ExecutionOutMaterialDetail::getMaterialDetailId).collect(Collectors.toList());
             //过滤需要修改的id集合
             materialDetailIdsByDb.removeAll(materialDetailIdsByUpdate);
diff --git a/mhd_oms/src/main/java/com/mhd/oms/domain/reservationInMaterialDetail/repository/persistence/ReservationInMaterialDetailImpl.java b/mhd_oms/src/main/java/com/mhd/oms/domain/reservationInMaterialDetail/repository/persistence/ReservationInMaterialDetailImpl.java
index c323103ef..d7af735b6 100644
--- a/mhd_oms/src/main/java/com/mhd/oms/domain/reservationInMaterialDetail/repository/persistence/ReservationInMaterialDetailImpl.java
+++ b/mhd_oms/src/main/java/com/mhd/oms/domain/reservationInMaterialDetail/repository/persistence/ReservationInMaterialDetailImpl.java
@@ -256,8 +256,11 @@ public class ReservationInMaterialDetailImpl extends ServiceImpl<ReservationInMa
             }
             inMaterialDetailList.add(inMaterialDetail);
         }
-        //需修改的物料明细id集合不为空
-        if (!CollectionUtils.isEmpty(inMaterialDetailDbList) && !CollectionUtils.isEmpty(materialDetailIdsByUpdate)){
+        // 库内存在有效明细即做对账软删：提交列表未覆盖的库内行视为用户已删除。
+        // 修复：此前还要求 materialDetailIdsByUpdate 非空(至少一行走更新分支)，
+        // "删光旧物料全部换新物料"时该集合为空，旧行漏软删(del_flag仍=1)，
+        // 下发后执行单计划数量=旧+新叠加。removeAll(空列表)为安全no-op
+        if (!CollectionUtils.isEmpty(inMaterialDetailDbList)){
             List<Long> materialDetailIdsByDb = inMaterialDetailDbList.stream().map(ReservationInMaterialDetail::getMaterialDetailId).collect(Collectors.toList());
             //过滤需要修改的id集合
             materialDetailIdsByDb.removeAll(materialDetailIdsByUpdate);
diff --git a/mhd_oms/src/main/java/com/mhd/oms/domain/reservationOutMaterialDetail/repository/persistence/ReservationOutMaterialDetailImpl.java b/mhd_oms/src/main/java/com/mhd/oms/domain/reservationOutMaterialDetail/repository/persistence/ReservationOutMaterialDetailImpl.java
index b8fdcd80d..732c45921 100644
--- a/mhd_oms/src/main/java/com/mhd/oms/domain/reservationOutMaterialDetail/repository/persistence/ReservationOutMaterialDetailImpl.java
+++ b/mhd_oms/src/main/java/com/mhd/oms/domain/reservationOutMaterialDetail/repository/persistence/ReservationOutMaterialDetailImpl.java
@@ -221,8 +221,11 @@ public class ReservationOutMaterialDetailImpl extends ServiceImpl<ReservationOut
             }
             outMaterialDetailList.add(outMaterialDetail);
         }
-        //需修改的物料明细id集合不为空
-        if (!CollectionUtils.isEmpty(materialDetailIdsByUpdate)){
+        // 库内存在明细即做对账软删：提交列表未覆盖的库内行视为用户已删除。
+        // 修复：此前要求 materialDetailIdsByUpdate 非空(至少一行走更新分支)，
+        // "删光旧物料全部换新物料"时该集合为空，旧行漏软删(del_flag仍=1)，
+        // 下发后计划数量=旧+新叠加。removeAll(空列表)为安全no-op
+        if (!CollectionUtils.isEmpty(outMaterialDetailDbList)){
             List<Long> materialDetailIdsByDb = outMaterialDetailDbList.stream().map(ReservationOutMaterialDetail::getMaterialDetailId).collect(Collectors.toList());
             //过滤需要修改的id集合
             materialDetailIdsByDb.removeAll(materialDetailIdsByUpdate);
diff --git a/mhd_oms/src/main/java/com/mhd/oms/domain/reserveInMaterialDetail/repository/persistence/ReserveInMaterialDetailImpl.java b/mhd_oms/src/main/java/com/mhd/oms/domain/reserveInMaterialDetail/repository/persistence/ReserveInMaterialDetailImpl.java
index ecaa36674..c6bbe078e 100644
--- a/mhd_oms/src/main/java/com/mhd/oms/domain/reserveInMaterialDetail/repository/persistence/ReserveInMaterialDetailImpl.java
+++ b/mhd_oms/src/main/java/com/mhd/oms/domain/reserveInMaterialDetail/repository/persistence/ReserveInMaterialDetailImpl.java
@@ -261,8 +261,11 @@ public class ReserveInMaterialDetailImpl extends ServiceImpl<ReserveInMaterialDe
             }
             inMaterialDetailList.add(inMaterialDetail);
         }
-        //需修改的物料明细id集合不为空
-        if (!CollectionUtils.isEmpty(inMaterialDetailDbList) && !CollectionUtils.isEmpty(materialDetailIdsByUpdate)){
+        // 库内存在有效明细即做对账软删：提交列表未覆盖的库内行视为用户已删除。
+        // 修复：此前还要求 materialDetailIdsByUpdate 非空(至少一行走更新分支)，
+        // "删光旧物料全部换新物料"时该集合为空，旧行漏软删(del_flag仍=1)，
+        // 下发后计划数量=旧+新叠加。removeAll(空列表)为安全no-op
+        if (!CollectionUtils.isEmpty(inMaterialDetailDbList)){
             List<Long> materialDetailIdsByDb = inMaterialDetailDbList.stream().map(ReserveInMaterialDetail::getMaterialDetailId).collect(Collectors.toList());
             //过滤需要修改的id集合
             materialDetailIdsByDb.removeAll(materialDetailIdsByUpdate);
diff --git a/mhd_oms/src/main/java/com/mhd/oms/domain/reserveOutMaterialDetail/repository/persistence/ReserveOutMaterialDetailImpl.java b/mhd_oms/src/main/java/com/mhd/oms/domain/reserveOutMaterialDetail/repository/persistence/ReserveOutMaterialDetailImpl.java
index 9aa9bc53e..ddb08c8d7 100644
--- a/mhd_oms/src/main/java/com/mhd/oms/domain/reserveOutMaterialDetail/repository/persistence/ReserveOutMaterialDetailImpl.java
+++ b/mhd_oms/src/main/java/com/mhd/oms/domain/reserveOutMaterialDetail/repository/persistence/ReserveOutMaterialDetailImpl.java
@@ -223,8 +223,11 @@ public class ReserveOutMaterialDetailImpl extends ServiceImpl<ReserveOutMaterial
             }
             outMaterialDetailList.add(outMaterialDetail);
         }
-        //需修改的物料明细id集合不为空
-        if (!CollectionUtils.isEmpty(materialDetailIdsByUpdate)){
+        // 库内存在明细即做对账软删：提交列表未覆盖的库内行视为用户已删除。
+        // 修复：此前要求 materialDetailIdsByUpdate 非空(至少一行走更新分支)，
+        // "删光旧物料全部换新物料"时该集合为空，旧行漏软删(del_flag仍=1)，
+        // 下发后计划数量=旧+新叠加。removeAll(空列表)为安全no-op
+        if (!CollectionUtils.isEmpty(outMaterialDetailDbList)){
             List<Long> materialDetailIdsByDb = outMaterialDetailDbList.stream().map(ReserveOutMaterialDetail::getMaterialDetailId).collect(Collectors.toList());
             //过滤需要修改的id集合
             materialDetailIdsByDb.removeAll(materialDetailIdsByUpdate);