I think you are mistaken.
THe Opening date is CIF'd to ECC release date and is not changed.
Opening Date = APO End Date - APO GR Time (Receiving Calendar) - Max(Transportation Lane Duration, APO Planned Delivery Time) - APO GI Time (Shipping Calendar) - APO Opening Period (Shipping Calendar)
So your planned delivery time is too large. Why have a transportation duration so small.
In fact you should set the planned delivery time to zero in APO if you have a transportation lane into that location.
Ken