To import relationships using contact names
For example, an individual is the "Employee of" an "Organization".
To check, do an advanced search by Employee of.
To import relationships using ID numbers
Sometimes you need to import contacts that might have similar names in the database. In this case, you'll want to use internal and external IDs.
Now you can import relationships to your heart's content. Here's an example with Households.
1. Setup your Excel file as follows:
2. Start as a Household type of import
3. Select Update Import
4. Map Column A to Internal Contact ID.
5. Map Column B to Household Member is and select External Identifier from the new dropdown that appears.
See our Sample CiviCRM Import Structure file for more assistance.