[Koha] Zebra Search - Availability

[ISM KIS]

I'm running Koha 3.00.01 on Suse 11.1 with Zebra.
 
Normal search is fine and the shows the books and the number of copies available:
   like:   Availability: Copies available: HS Library (1), 
 
but when I then 'Refine your search' and limit to currently available items' then I get:  No Result found ! 
 
(if you want to check http://koha.kis.in )
 
Problem with indexing in Zebra? 
Any idea what to do?
 
Rudy Wuthrich
Kodaikanal International Schhool 



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