server/AyaNova/biz/PMBiz.cs

@@ -822,12 +822,12 @@ namespace AyaNova.Biz
 
             var idList = dataListSelectedRequest.SelectedRowIds;
             JArray ReportData = new JArray();
-
+            List<PM> batchResults = new List<PM>();
             while (idList.Any())
             {
                 var batch = idList.Take(IReportAbleObject.REPORT_DATA_BATCH_SIZE);
                 idList = idList.Skip(IReportAbleObject.REPORT_DATA_BATCH_SIZE).ToArray();
-                List<PM> batchResults = new List<PM>();
+                batchResults.Clear();
                 foreach (long batchId in batch)
                     batchResults.Add(await PMGetPartialAsync(dataListSelectedRequest.AType, batchId, dataListSelectedRequest.IncludeWoItemDescendants, true));