3.3.1 update

distributed-print-business/src/main/java/com/qmth/distributed/print/business/service/impl/BasicExamStudentServiceImpl.java

@@ -159,7 +159,7 @@ public class BasicExamStudentServiceImpl extends ServiceImpl<BasicExamStudentMap
         }
 
         if (ExamModelEnum.MODEL4.equals(basicExam.getExamModel()) && basicExamStudentOld != null) {
-            markPaperService.deleteByExamIdAndPaperNumber(basicExamStudent.getExamId(), basicExamStudent.getPaperNumber(), true);
+            markPaperService.deleteByExamIdAndPaperNumber(basicExamStudent.getExamId(), basicExamStudentOld.getPaperNumber(), true);
         }
         return basicExamStudent.getId();
     }