Library Path display issue

I met a problem when I define the library in cds.lib file.

If I define like below:

DEFINE    LIBA    PATHA

SOFTDEFINE    LIBA   PATHB

WHen the  PATHA and  PATHB all exist, in Library Path, it will show the PATHB without any problem.

If the  PATHA is exist and the PATHB is not exist, the Library Path will show the PATHB in red, but it will point the LIBA to the  PATHA. Then if I show the property of LIBA, it will show the PATHA.

My question is how can I make the library path to show the correct path if the SOFTDEFINE path is not exist.

Thanks

Kevin