I'm looking for a way to add contacts to a group from a CSV file including e-mails of contacts already existing in Civi.
When I import into Civi, I use the update option and select primary e-mail, and even when the e-mail is the same, it ads a second e-mail entry with the same e-mail that already exists.
Is there a way around this? It doesn't seem like it's the correct action as it pollutes the contact card with repeated e-mail entries.