Hi Elyse.

>I think one major difference between the data sets is that the good one was new and the bad ones had been through previous attempts at upgrading.

Ah, that explains it. Is there any way these tables can be restored from backup? If not (ie. they're not just test tables and you don't have a recent backup), zip 'em up and send 'em to me and I'll take care of them.

Doug