diff --git a/src/applications/calendar/editor/PhabricatorCalendarEditEngine.php b/src/applications/calendar/editor/PhabricatorCalendarEditEngine.php
--- a/src/applications/calendar/editor/PhabricatorCalendarEditEngine.php
+++ b/src/applications/calendar/editor/PhabricatorCalendarEditEngine.php
@@ -65,11 +65,40 @@
         ->setKey('name')
         ->setLabel(pht('Name'))
         ->setDescription(pht('Name of the event.'))
+        ->setIsRequired(true)
+        ->setTransactionType(PhabricatorCalendarEventTransaction::TYPE_NAME)
         ->setConduitDescription(pht('Rename the event.'))
         ->setConduitTypeDescription(pht('New event name.'))
-        ->setTransactionType(PhabricatorCalendarEventTransaction::TYPE_NAME)
-        ->setIsRequired(true)
         ->setValue($object->getName()),
+      id(new PhabricatorRemarkupEditField())
+        ->setKey('description')
+        ->setLabel(pht('Description'))
+        ->setDescription(pht('Description of the event.'))
+        ->setTransactionType(
+          PhabricatorCalendarEventTransaction::TYPE_DESCRIPTION)
+        ->setConduitDescription(pht('Update the event description.'))
+        ->setConduitTypeDescription(pht('New event description.'))
+        ->setValue($object->getDescription()),
+      id(new PhabricatorBoolEditField())
+        ->setKey('cancelled')
+        ->setOptions(pht('Active'), pht('Cancelled'))
+        ->setLabel(pht('Cancelled'))
+        ->setDescription(pht('Cancel the event.'))
+        ->setTransactionType(
+          PhabricatorCalendarEventTransaction::TYPE_CANCEL)
+        ->setIsConduitOnly(true)
+        ->setConduitDescription(pht('Cancel or restore the event.'))
+        ->setConduitTypeDescription(pht('True to cancel the event.'))
+        ->setValue($object->getIsCancelled()),
+      id(new PhabricatorIconSetEditField())
+        ->setKey('icon')
+        ->setLabel(pht('Icon'))
+        ->setIconSet(new PhabricatorCalendarIconSet())
+        ->setTransactionType(PhabricatorCalendarEventTransaction::TYPE_ICON)
+        ->setDescription(pht('Event icon.'))
+        ->setConduitDescription(pht('Change the event icon.'))
+        ->setConduitTypeDescription(pht('New event icon.'))
+        ->setValue($object->getIcon()),
     );
 
     return $fields;
diff --git a/src/applications/calendar/editor/PhabricatorCalendarEventEditor.php b/src/applications/calendar/editor/PhabricatorCalendarEventEditor.php
--- a/src/applications/calendar/editor/PhabricatorCalendarEventEditor.php
+++ b/src/applications/calendar/editor/PhabricatorCalendarEventEditor.php
@@ -40,6 +40,8 @@
     $event->setIsStub(0);
 
     $invitees = $event->getParentEvent()->getInvitees();
+
+    $new_invitees = array();
     foreach ($invitees as $invitee) {
       $invitee = id(new PhabricatorCalendarEventInvitee())
         ->setEventPHID($event->getPHID())
@@ -47,9 +49,12 @@
         ->setInviterPHID($invitee->getInviterPHID())
         ->setStatus($invitee->getStatus())
         ->save();
+
+      $new_invitees[] = $invitee;
     }
 
     $event->save();
+    $event->attachInvitees($new_invitees);
   }
 
   public function getTransactionTypes() {
@@ -67,8 +72,6 @@
     $types[] = PhabricatorCalendarEventTransaction::TYPE_RECURRING;
     $types[] = PhabricatorCalendarEventTransaction::TYPE_FREQUENCY;
     $types[] = PhabricatorCalendarEventTransaction::TYPE_RECURRENCE_END_DATE;
-    $types[] = PhabricatorCalendarEventTransaction::TYPE_INSTANCE_OF_EVENT;
-    $types[] = PhabricatorCalendarEventTransaction::TYPE_SEQUENCE_INDEX;
 
     $types[] = PhabricatorTransactions::TYPE_COMMENT;
     $types[] = PhabricatorTransactions::TYPE_VIEW_POLICY;
@@ -87,10 +90,6 @@
         return $object->getRecurrenceFrequency();
       case PhabricatorCalendarEventTransaction::TYPE_RECURRENCE_END_DATE:
         return $object->getRecurrenceEndDate();
-      case PhabricatorCalendarEventTransaction::TYPE_INSTANCE_OF_EVENT:
-        return $object->getInstanceOfEventPHID();
-      case PhabricatorCalendarEventTransaction::TYPE_SEQUENCE_INDEX:
-        return $object->getSequenceIndex();
       case PhabricatorCalendarEventTransaction::TYPE_NAME:
         return $object->getName();
       case PhabricatorCalendarEventTransaction::TYPE_START_DATE:
@@ -131,8 +130,6 @@
     switch ($xaction->getTransactionType()) {
       case PhabricatorCalendarEventTransaction::TYPE_RECURRING:
       case PhabricatorCalendarEventTransaction::TYPE_FREQUENCY:
-      case PhabricatorCalendarEventTransaction::TYPE_INSTANCE_OF_EVENT:
-      case PhabricatorCalendarEventTransaction::TYPE_SEQUENCE_INDEX:
       case PhabricatorCalendarEventTransaction::TYPE_NAME:
       case PhabricatorCalendarEventTransaction::TYPE_DESCRIPTION:
       case PhabricatorCalendarEventTransaction::TYPE_CANCEL:
@@ -159,10 +156,6 @@
         return $object->setIsRecurring($xaction->getNewValue());
       case PhabricatorCalendarEventTransaction::TYPE_FREQUENCY:
         return $object->setRecurrenceFrequency($xaction->getNewValue());
-      case PhabricatorCalendarEventTransaction::TYPE_INSTANCE_OF_EVENT:
-        return $object->setInstanceOfEventPHID($xaction->getNewValue());
-      case PhabricatorCalendarEventTransaction::TYPE_SEQUENCE_INDEX:
-        return $object->setSequenceIndex($xaction->getNewValue());
       case PhabricatorCalendarEventTransaction::TYPE_NAME:
         $object->setName($xaction->getNewValue());
         return;
@@ -202,8 +195,6 @@
       case PhabricatorCalendarEventTransaction::TYPE_RECURRING:
       case PhabricatorCalendarEventTransaction::TYPE_FREQUENCY:
       case PhabricatorCalendarEventTransaction::TYPE_RECURRENCE_END_DATE:
-      case PhabricatorCalendarEventTransaction::TYPE_INSTANCE_OF_EVENT:
-      case PhabricatorCalendarEventTransaction::TYPE_SEQUENCE_INDEX:
       case PhabricatorCalendarEventTransaction::TYPE_NAME:
       case PhabricatorCalendarEventTransaction::TYPE_START_DATE:
       case PhabricatorCalendarEventTransaction::TYPE_END_DATE:
@@ -253,8 +244,6 @@
         case PhabricatorCalendarEventTransaction::TYPE_RECURRING:
         case PhabricatorCalendarEventTransaction::TYPE_FREQUENCY:
         case PhabricatorCalendarEventTransaction::TYPE_RECURRENCE_END_DATE:
-        case PhabricatorCalendarEventTransaction::TYPE_INSTANCE_OF_EVENT:
-        case PhabricatorCalendarEventTransaction::TYPE_SEQUENCE_INDEX:
         case PhabricatorCalendarEventTransaction::TYPE_START_DATE:
         case PhabricatorCalendarEventTransaction::TYPE_END_DATE:
         case PhabricatorCalendarEventTransaction::TYPE_CANCEL:
diff --git a/src/applications/calendar/storage/PhabricatorCalendarEventTransaction.php b/src/applications/calendar/storage/PhabricatorCalendarEventTransaction.php
--- a/src/applications/calendar/storage/PhabricatorCalendarEventTransaction.php
+++ b/src/applications/calendar/storage/PhabricatorCalendarEventTransaction.php
@@ -16,9 +16,6 @@
   const TYPE_FREQUENCY = 'calendar.frequency';
   const TYPE_RECURRENCE_END_DATE = 'calendar.recurrenceenddate';
 
-  const TYPE_INSTANCE_OF_EVENT = 'calendar.instanceofevent';
-  const TYPE_SEQUENCE_INDEX = 'calendar.sequenceindex';
-
   const MAILTAG_RESCHEDULE = 'calendar-reschedule';
   const MAILTAG_CONTENT = 'calendar-content';
   const MAILTAG_OTHER = 'calendar-other';
@@ -48,8 +45,6 @@
       case self::TYPE_RECURRING:
       case self::TYPE_FREQUENCY:
       case self::TYPE_RECURRENCE_END_DATE:
-      case self::TYPE_INSTANCE_OF_EVENT:
-      case self::TYPE_SEQUENCE_INDEX:
         $phids[] = $this->getObjectPHID();
         break;
       case self::TYPE_INVITE:
@@ -75,8 +70,6 @@
       case self::TYPE_RECURRING:
       case self::TYPE_FREQUENCY:
       case self::TYPE_RECURRENCE_END_DATE:
-      case self::TYPE_INSTANCE_OF_EVENT:
-      case self::TYPE_SEQUENCE_INDEX:
         return ($old === null);
     }
     return parent::shouldHide();
@@ -95,8 +88,6 @@
       case self::TYPE_RECURRING:
       case self::TYPE_FREQUENCY:
       case self::TYPE_RECURRENCE_END_DATE:
-      case self::TYPE_INSTANCE_OF_EVENT:
-      case self::TYPE_SEQUENCE_INDEX:
         return 'fa-pencil';
         break;
       case self::TYPE_INVITE:
@@ -283,9 +274,6 @@
         $text = pht('%s has changed the recurrence end date of this event.',
           $this->renderHandleLink($author_phid));
         return $text;
-      case self::TYPE_INSTANCE_OF_EVENT:
-      case self::TYPE_SEQUENCE_INDEX:
-        return pht('Recurring event has been updated.');
     }
     return parent::getTitle();
   }
@@ -501,9 +489,6 @@
           $this->renderHandleLink($object_phid),
           $new);
         return $text;
-      case self::TYPE_INSTANCE_OF_EVENT:
-      case self::TYPE_SEQUENCE_INDEX:
-        return pht('Recurring event has been updated.');
     }
 
     return parent::getTitleForFeed();