After setting up Contact Integration, I see duplicate contacts.

Symptom

You have set up CardDAV sync for contacts and have noticed that duplicate records are in your database.

Solution

You will have to remove the duplicates one by one manually.

1. Working from the People view, click the Magnifying glass button and enter the name of the person. Daylite filters and displays the matching records.
2. Choose View > Multi-Column List.
3. Go through the contact names one by one, retain the main person and delete the duplicates. To delete the duplicate entry, select the record and press the delete key. In the window that opens, click Move to Trash.

You can easily recognize duplicate entries. All duplicate entries will have a "\" in their name. For example, the primary record "Robert" will have a duplicate saying "Robert\" You can use the above method to remove duplicate companies.