When edit the a recurrent appointment by dragging or resizing it, existing exceptions are not cleared. They are cleared only when edit the appointment by its dialog.
The scroll goes only to the top or to the bottom.
When the appointment is in the AllDayArea and it ends at the CurrentDate and the DayStartTime and DayEndTime are set, the arrow for continuance is still shown.
When the appointment is few days long and the IsAllDayEvent is Not set, the appointment is rendered on the previous day. The DayStartTime should also be set to something different then 0:00h.