diff --git a/src/Core/Services/SectionBoxBatchDetector.cs b/src/Core/Services/SectionBoxBatchDetector.cs
index 31fbf01..983601c 100644
--- a/src/Core/Services/SectionBoxBatchDetector.cs
+++ b/src/Core/Services/SectionBoxBatchDetector.cs
@@ -109,9 +109,13 @@ namespace NavisworksTransport.Core.Services
 
                 Directory.CreateDirectory(workDirectory);
                 string safeId = string.IsNullOrWhiteSpace(instanceId) ? Guid.NewGuid().ToString("N") : instanceId;
-                string localModelPath = Path.Combine(workDirectory, $"model-{safeId}.nwd");
-                string routeFilePath = Path.Combine(workDirectory, $"route-{safeId}.json");
-                string secondaryDbPath = Path.Combine(workDirectory, $"secondary-{safeId}.db");
+
+                // 文件名带时间戳后缀：同一 itemId 重复执行（残留状态重置重跑）时避免与
+                // 旧执行的文件重名——旧副实例可能仍持有旧文件句柄，同名覆盖会触发加载失败弹窗
+                string fileStamp = DateTime.Now.ToString("yyyyMMddHHmmssfff");
+                string localModelPath = Path.Combine(workDirectory, $"model-{safeId}-{fileStamp}.nwd");
+                string routeFilePath = Path.Combine(workDirectory, $"route-{safeId}-{fileStamp}.json");
+                string secondaryDbPath = Path.Combine(workDirectory, $"secondary-{safeId}-{fileStamp}.db");
 
                 // 1. 路径剖面盒（复用产品路径盒语义：路径点 + 虚拟物体高度附加点 + 水平 4m/高度 2m 扩展）
                 //    与 LogisticsControlViewModel.EnableClipBoxForCurrentRoute 一致（地面路径点上方、空中路径下方加物体高度）