diff --git a/src/views/modules/sampleTracking/projectProofTracking.vue b/src/views/modules/sampleTracking/projectProofTracking.vue
index f56fab8..b122557 100644
--- a/src/views/modules/sampleTracking/projectProofTracking.vue
+++ b/src/views/modules/sampleTracking/projectProofTracking.vue
@@ -1654,6 +1654,9 @@ function cloneDefaultTrackingColumns () {
   return DEFAULT_TRACKING_COLUMNS.map(item => Object.assign({}, item))
 }
 
+// 动态列保存会重建页面；只临时传递本页 BU，不持久化或改变其他页面的刷新行为。
+let pendingRefreshBu = null
+
 export default {
   name: 'ProjectProofTracking',
   directives: {
@@ -1895,6 +1898,14 @@ export default {
       }
     }
   },
+  created () {
+    const savedBu = pendingRefreshBu
+    pendingRefreshBu = null
+    // 必须在 activated 加载 BU/工序/列表前恢复；用户或工厂切换时不沿用旧选择。
+    if (savedBu && savedBu.userName === this.searchData.userName && savedBu.site === this.searchData.site) {
+      this.searchData.buNo = savedBu.buNo
+    }
+  },
   mounted () {
     this.bindTrackingTableResize()
     this.scheduleTrackingTableHeightUpdate()
@@ -1918,6 +1929,13 @@ export default {
     this.destroyDefaultProcessConfigSortable()
   },
   beforeDestroy () {
+    if (this.$store.state.common.contentIsNeedRefresh) {
+      pendingRefreshBu = {
+        userName: this.searchData.userName,
+        site: this.searchData.site,
+        buNo: this.searchData.buNo
+      }
+    }
     this.unbindTrackingTableResize()
   },
   watch: {