When I import Territories from an excel document the dataset that is created contains 3134 records and the fields County, State, Territory, Country/Region. The moment that I open the Territory Manager in MapPoint it modifies the dataset so that there are still 3134 records but no fields????

For Each objField in mpDataSet.Fields
sFieldNames = sFieldNames & objField.Name & vbCrLf
Next

MsgBox mpDataSet.RecordCount & vbCrLf & sFieldNames

Before using the Territory Manager the message box displays:
3134
County
State
Country/Region
Territory
After opening the Territory Manager not making any changes then closing the Territory Manager on the same map the message box displays only 3134.

Can anyone explain where the field names go?
Thanks,
Jon