Merge pull request #21022 from eileenmcnaughton/sched

#2735 fix for effective start & end date not updating

CRM/Admin/Form/ScheduleReminders.php

@@ -519,6 +519,8 @@ class CRM_Admin_Form_ScheduleReminders extends CRM_Admin_Form {
       'end_frequency_interval',
       'end_action',
       'end_date',
+      'effective_end_date',
+      'effective_start_date',
     ];
 
     if (empty($params['absolute_date'])) {