dbexport on SCO fails! (horribly)

Hi All, We are trying to copy one of our databases from a SCO system to a Linux system. Because of the ISAM incompatibility we cannot just copy the files, we have to do a dbexport on the SCO box and a dbimport on the Linux box. The problem is that both dbexport and dbschema fail on the SCO machine (Informix SE 7.2* <- we tried several versions in the .2 range). Both programmes complain about indentical values in a table that should only have unique entries. It concerns a very small table (only four entries), we checked this table and there were _NO_ duplicate entries. We think the problem might be that one of our users "manually" modified this table using an ODBC connection from M$-Access (I hate ODBC). But still the table and the entries in it appear fine.. (bcheck found no errors) Is this a known bug in dbexport for SCO? Is there a patched-up version? Many thanks in advance, Sven Eric, the Netherlands