LEF generation from abstract is missing class,symmetry, origin information

HI ,

I am trying to generate LEF file of an abstract (top level cell: TOP_CELL). Eventhough LEF is getting generated it is missing the following information.

###################################################
CLASS;
Symmetry ;
SIZE X Y;
FOREIGN TOP_CELL_NAME (0 0) N

ORIGIN (0 0);

#######################################

I am using LEF Version: 5.7
Virtuoso: IC6.1.7-64b.500.7

options  enabled in LEF generation menu window are

1) LEF File Name:  TOP_CELL.lef

2)cells

3)Output cell(s): TOP_CELL

4)Output views : abstract

5) Lef version: 5.7
6)No Technology

7)Generate cell list by: Cells in Design

8)Use GUI Fields

Is there anything wrong in the way LEF is being generated ?.  I am seeing the pin information and blockage layer information  available in the LEF file that was generated.



Regards
Anand