Index: src/calendar.h
===================================================================
--- src/calendar.h
+++ src/calendar.h
@@ -1349,10 +1349,16 @@
         virtual void calendarIncidenceChanged(const Incidence::Ptr &incidence);
 
         /**
+          Notify the Observer that an Incidence will be removed.
+          @param incidence is a pointer to the Incidence that will be removed.
+        */
+        virtual void calendarIncidenceAboutToBeDeleted(const Incidence::Ptr &incidence);
+
+        /**
           Notify the Observer that an Incidence has been removed.
           @param incidence is a pointer to the Incidence that was removed.
         */
-        virtual void calendarIncidenceDeleted(const Incidence::Ptr &incidence);
+        virtual void calendarIncidenceDeleted(const Incidence::Ptr &incidence, const Calendar *calendar);
 
         /**
           Notify the Observer that an addition of Incidence has been canceled.
@@ -1410,8 +1416,14 @@
     void notifyIncidenceChanged(const Incidence::Ptr &incidence);
 
     /**
+      Let Calendar subclasses notify that they will remove an Incidence.
+      @param incidence is a pointer to the Incidence object that will be removed.
+    */
+    void notifyIncidenceAboutToBeDeleted(const Incidence::Ptr &incidence);
+
+    /**
       Let Calendar subclasses notify that they removed an Incidence.
-      @param incidence is a pointer to the Incidence object that was removed.
+      @param incidence is a pointer to the Incidence object that has been removed.
     */
     void notifyIncidenceDeleted(const Incidence::Ptr &incidence);
 
Index: src/calendar.cpp
===================================================================
--- src/calendar.cpp
+++ src/calendar.cpp
@@ -1182,11 +1182,17 @@
     Q_UNUSED(incidence);
 }
 
-void Calendar::CalendarObserver::calendarIncidenceDeleted(const Incidence::Ptr &incidence)
+void Calendar::CalendarObserver::calendarIncidenceAboutToBeDeleted(const Incidence::Ptr &incidence)
 {
     Q_UNUSED(incidence);
 }
 
+void Calendar::CalendarObserver::calendarIncidenceDeleted(const Incidence::Ptr &incidence, const Calendar *calendar)
+{
+    Q_UNUSED(incidence);
+    Q_UNUSED(calendar);
+}
+
 void
 Calendar::CalendarObserver::calendarIncidenceAdditionCanceled(const Incidence::Ptr &incidence)
 {
@@ -1300,7 +1306,7 @@
     }
 }
 
-void Calendar::notifyIncidenceDeleted(const Incidence::Ptr &incidence)
+void Calendar::notifyIncidenceAboutToBeDeleted(const Incidence::Ptr &incidence)
 {
     if (!incidence) {
         return;
@@ -1311,7 +1317,22 @@
     }
 
     foreach (CalendarObserver *observer, d->mObservers) {
-        observer->calendarIncidenceDeleted(incidence);
+        observer->calendarIncidenceAboutToBeDeleted(incidence);
+    }
+}
+
+void Calendar::notifyIncidenceDeleted(const Incidence::Ptr &incidence)
+{
+    if (!incidence) {
+        return;
+    }
+
+    if (!d->mObserversEnabled) {
+        return;
+    }
+
+    foreach(CalendarObserver *observer, d->mObservers) {
+        observer->calendarIncidenceDeleted(incidence, this);
     }
 }
 
Index: src/memorycalendar.cpp
===================================================================
--- src/memorycalendar.cpp
+++ src/memorycalendar.cpp
@@ -183,11 +183,16 @@
     // we remove relations in deleteIncidence, not in deleteTodo.
     removeRelations(incidence);
     const Incidence::IncidenceType type = incidence->type();
+
     const QString uid = realUid(incidence);
-    if (d->mIncidences[type].remove(uid, incidence)) {
+    if (d->mIncidences[type].contains(uid, incidence)) {
+        // Notify while the incidence is still available,
+        // this is necessary so korganizer still has time to query for exceptions
+        notifyIncidenceAboutToBeDeleted(incidence);
+
+        d->mIncidences[type].remove(uid, incidence);
         d->mIncidencesByIdentifier.remove(realIdentifier(incidence));
         setModified(true);
-        notifyIncidenceDeleted(incidence);
         if (deletionTracking()) {
             d->mDeletedIncidences[type].insert(uid, incidence);
         }
@@ -200,6 +205,7 @@
         if (!incidence->hasRecurrenceId()) {
             deleteIncidenceInstances(incidence);
         }
+        notifyIncidenceDeleted(incidence);
         return true;
     } else {
         qCWarning(KCALCORE_LOG) << incidence->typeStr() << " not found. uid=" << uid;
@@ -233,7 +239,7 @@
     QHashIterator<QString, Incidence::Ptr>i(mIncidences[incidenceType]);
     while (i.hasNext()) {
         i.next();
-        q->notifyIncidenceDeleted(i.value());
+        q->notifyIncidenceAboutToBeDeleted(i.value());
         i.value()->unRegisterObserver(q);
     }
     mIncidences[incidenceType].clear();