Close CRM Duplicate Leads on Import

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Ongoing Web Updated November 13, 2026Based on 2 user reportsHow we research

Quick answer

Imports into Close can create duplicate leads because there is no opt-out of lead creation matching; clean the CSV first and use merge tools.

Most likely fix: Prepare the import

How to fix it

Try these in order — the most common fix is first.

  1. 1. Prepare the import

    1. Dedupe the CSV by company and email first
    2. Map lead name and contact email consistently
    Did this fix it?
  2. 2. Clean up

    1. Use Close's merge duplicate leads tool
    2. Review duplicates after import
    Did this fix it?

Symptoms

Duplicate leads after CSV import.

Why it happens

  • Import creates new leads for non-matching names
  • No duplicate-skip option reported by users

This guide also covers

  • close crm duplicate leads
  • close import duplicates

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