1 files changed, 14 insertions, 1 deletions

diff --git a/korganizer/koagendaview.cpp b/korganizer/koagendaview.cpp
index 13d8398..4ff6899 100644
--- a/korganizer/koagendaview.cpp
+++ b/korganizer/koagendaview.cpp
@@ -990,25 +990,38 @@ void KOAgendaView::updateEventDates(KOAgendaItem *item, int type)
                 if ( item->cellYBottom() > 0 )
                     endDt.setTime(mAgenda->gyToTime(item->cellYBottom()+1));
                 else
                     endDt.setTime((static_cast<Todo*>(item->incidence()))->dtDue().time());
                 endDt.setDate(startDate);
             }
         }
     }
     if ( item->incidence()->type() == "Event" ) {
         item->incidence()->setDtStart(startDt);
         (static_cast<Event*>(item->incidence()))->setDtEnd(endDt);
     } else if ( item->incidence()->type() == "Todo" ) {
-        (static_cast<Todo*>(item->incidence()))->setDtDue(endDt);
+        Todo* to = static_cast<Todo*>(item->incidence());
+
+        int len  = 0;
+        if ( to->hasStartDate() &&  to->hasDueDate() )
+            len = to->dtStart().secsTo( to->dtDue());
+        to->setDtDue(endDt);
+        if ( to->hasStartDate() ) {
+            if ( len>0 ) 
+                to->setDtStart(to->dtDue().addSecs( -len ));
+            else
+                if (to->dtStart() > to->dtDue() )
+                    to->setDtStart(to->dtDue().addDays( -3 ));
+        }
+        
     }
     //qDebug("KOAgendaView::updateEventDates stsart %s end %s ", startDt.toString().latin1(), endDt.toString().latin1() );
     item->incidence()->setRevision(item->incidence()->revision()+1);
     item->setItemDate(startDt.date());
     //item->updateItem();
     if ( item->incidence()->type() == "Todo" ) {
          emit  todoMoved((Todo*)item->incidence(),  KOGlobals::EVENTEDITED );
 
     }
      else
          emit incidenceChanged(item->incidence(), KOGlobals::EVENTEDITED);
      item->updateItem();