Dear Swiber,
i faced the same problem during Unicode conversion project, in the import phase.
(IMP) INFO: EndFastLoad failed with <2: BCP commit failed:[Microsoft][SQL Server Native Client 10.0][SQL Server]Violation of PRIMARY KEY constraint 'QCMT030A~0'. Canno>
(IMP) ERROR: EndFastload: rc = 2
(DB) INFO: QCMT030X deleted/truncated
can you please tell me how did you solve your problem??
best regards,
Ehab Magdy