[otrs] Problem with database

Hello, I install otrs on winxp with a standard xampp. Everything is working fine but I have a strange problem with the database. I use phpadmin to populate the customer_user database from a csv file, everything here is fine. When I create a new ticket, some records don't show up. In customer management the same records don't show. If I make a query in admin sql box, I can see all the records. Any idea ? Christophe