Importing to existing contact records in Salesforce NPSP

Importing to existing contact records in Salesforce NPSP

Hello,

I'm attempting to import opportunities into existing contact records in Salesforce NPSP.  I know the contacts have existing account but my lookup is not finding the records.

I am currently using a Target lookup that searches the First Name, Last Name and Mailing Street for the contact.  Skyvia does not find the existing account and creates a new record in Salesforce.  I've also made my lookup case insensitive and use first match when multiple records found.