Index: ssts-wash/src/main/java/com/forgon/disinfectsystem/washanddisinfectmanager/washanddisinfectrecord/service/WashAndDisinfectRecordManagerImpl.java
===================================================================
diff -u -r37151 -r37195
--- ssts-wash/src/main/java/com/forgon/disinfectsystem/washanddisinfectmanager/washanddisinfectrecord/service/WashAndDisinfectRecordManagerImpl.java	(.../WashAndDisinfectRecordManagerImpl.java)	(revision 37151)
+++ ssts-wash/src/main/java/com/forgon/disinfectsystem/washanddisinfectmanager/washanddisinfectrecord/service/WashAndDisinfectRecordManagerImpl.java	(.../WashAndDisinfectRecordManagerImpl.java)	(revision 37195)
@@ -1565,7 +1565,8 @@
 			if (CollectionUtils.isEmpty(cb.getWashAndDisinfectRecords())) {
 				isFistWash = true;
 			} else {
-				List<WashAndDisinfectRecord> washRecordList = cb.getWashAndDisinfectRecords();
+				List<WashAndDisinfectRecord> washRecordList = new ArrayList<WashAndDisinfectRecord>();
+				washRecordList.addAll(cb.getWashAndDisinfectRecords());
 				if(washAndDisinfectRecord != null && !washRecordList.contains(washAndDisinfectRecord)){
 					washRecordList.add(washAndDisinfectRecord);
 				}