Thanks Vincent,
I agree entirely with your observations. It is unlikely that the table ever had more than one record in it, but not impossible. Given that it was just modified (adding an extra field) using DF18.2, I suspect that the one-record rule has now been enforced and any evidence of extra records is now probably lost. Therefore I do not think it worth taking up your valuable time to examine this any further. (I will save that time for something else!!!)