diff --git a/generic/views.py b/generic/views.py
index 16acf778..cb1455ba 100644
--- a/generic/views.py
+++ b/generic/views.py
@@ -389,10 +389,18 @@ class ExamViews(View, LoginRequiredMixin):
 
         path= "{0}{1}/exam/{2}.json".format(settings.MEDIA_ROOT, self.app_name, pk)
         url= "{0}{1}/exam/{2}.json".format(settings.MEDIA_URL, self.app_name, pk)
+        if request.GET.get('_'):
+            query_string =  urllib.parse.urlencode({'_': request.GET.get('_')}) 
+            url = '{}?{}'.format(url, query_string)
+            return redirect(url) 
 
 
         if os.path.isfile(path) and not exam.recreate_json:
             #exam_json_cache["cached"] = True
+            if request.GET.get('_'):
+                query_string =  urllib.urlencode({'_': request.GET.get('_')}) 
+                url = '{}?{}'.format(url, query_string)
+                return redirect(url) 
             return redirect(url)
             return JsonResponse(exam_json_cache)