I've setup an import template to import child records of a parent. Using the user manual, thought I had it, but it constantly adds the records to the parent, not update. If the Parent (owner of Child, multiple) has key fields A & B, I set those first in the import template and csv file. The template has them both marked as "PATH" values pointing to perspective parent fields.
Parent.KeyField1 , Parent.KeyField2, Child.Field1,......Child.Field10
The csv import file has matching data to existing records in the parent. Yet, When I use this template & data, it keeps adding new records instead of first looking up and updating.