diff --git a/src/views/modules/changeManagement/changeRecord.vue b/src/views/modules/changeManagement/changeRecord.vue
index 6f4a633..bb49498 100644
--- a/src/views/modules/changeManagement/changeRecord.vue
+++ b/src/views/modules/changeManagement/changeRecord.vue
@@ -320,7 +320,7 @@
                       min-width="170"
                       label="New IFS Part No.">
                       <template slot-scope="scope">
-                        <el-input clearable @keydown.native.prevent :ref="`newPartNo${scope.$index}`" v-model="scope.row.finalPartNo" style="width:77%"></el-input>
+                        <el-input clearable @keydown.native.prevent @clear="scope.row.newPartNo = ''" :ref="`newPartNo${scope.$index}`" v-model="scope.row.finalPartNo" style="width:77%"></el-input>
                         <el-button :disabled="showModalFlag||changeRequestDetailFlag('newPartNo') === 'N'" type="primary" @click="choosePartNo(scope.row)" style="width:18%;padding: 3px 7px">·&nbsp;·&nbsp;·</el-button>
                       </template>
                     </el-table-column>
@@ -4284,7 +4284,12 @@
         this.modalData.menuId = this.$route.meta.menuId
 
         // 处理明细列表：前端显示用finalPartNo（IFS物料编码），后端存储用newPartNo（PLM物料编码）
-        // newPartNo在选择物料时已经正确设置为PLM编码，这里直接传递即可
+        // finalPartNo 已清空时同步清除 newPartNo，防止 clearable 后旧值残留被提交
+        this.chooseDataList.forEach(item => {
+          if (!item.finalPartNo) {
+            item.newPartNo = ''
+          }
+        })
         this.modalData.detailList = this.chooseDataList
         this.modalData.ecnTypeData = this.form
         this.modalData.costImpactData = this.costImpactData
@@ -4632,6 +4637,12 @@
         this.countersignatureData.changeNo = this.modalData.changeNo
         this.countersignatureData.chooseCSItemList = this.chooseCSItemList
 
+        // finalPartNo 已清空时同步清除 newPartNo，防止 clearable 后旧值残留被提交
+        this.chooseDataList.forEach(item => {
+          if (!item.finalPartNo) {
+            item.newPartNo = ''
+          }
+        })
         this.modalData.detailList = this.chooseDataList
         this.modalData.ecnTypeData = this.form
         this.modalData.costImpactData = this.costImpactData