If you have a filespace that doesn't expire, that means that it has probably
been either deleted on the box and so the client can't access it (It must be
able to access a filespace in order to check with files have gone and which
have not), or it has been renamed, and so you have an "image" of how the
filespace looked when the lv or drive was renamed.
    Can you go to the boxes involved, and go into the areas this affects?   
I had many AIX machines where the mounts had changed, and they leave behind
the litter of non-deleted filespaces.
 
    -Craig.