HI,
i like to relate calls from a csv-file to contacts.

This is what the structure of the data is:

unique id for each row ID
Company name
Adress data
Branche
start date
status

now I what to place this items under contacts an relate calls to this items
what i have to select under contact and what under calls

The problem which appear is that the calls are added to contacts instead of updating the data

Can someone help me?