Contacts & CRM

Merging duplicate contacts

3 minutes read time Difficulty: intermediate

Merging duplicate contacts

Over time, duplicates can appear when the same person contacts you from different contexts. Here's how to clean them up.

How duplicates happen

  • Same person imported twice from different CSVs
  • Contact created manually when they already existed
  • Same phone number with slight formatting differences

Finding duplicates

AIsoule detects potential duplicates automatically:

  1. Go to Contacts
  2. Look for the "Merge" button or duplicate indicator
  3. AIsoule shows contacts with matching phone numbers

Merging contacts

  1. Click "Merge" (or go to Contacts → Merge)
  2. You'll see pairs of potential duplicates
  3. For each pair, choose:
    • Primary contact — The one to keep
    • Secondary contact — The one to merge into primary
  4. Review what will be merged:
    • Messages → moved to primary
    • Notes → moved to primary
    • Tags → combined (union)
    • Custom fields → primary's values kept (or choose)
    • Call logs → moved to primary
  5. Click "Merge"

What happens during merge

DataAction
MessagesAll moved to primary contact
NotesAll moved to primary contact
TagsCombined (both contacts' tags)
Custom fieldsPrimary's values kept by default
Call logsMoved to primary
Secondary contactSoft-deleted (removed from list)

Merge preview

Before merging, you can preview:

  • How many messages will be moved
  • Which tags will be combined
  • Any field conflicts (different values for same field)

Undoing a merge

⚠️ Merging cannot be undone. Always review the preview carefully before confirming.

Tips

  1. Merge regularly — Check for duplicates monthly
  2. Import carefully — Use "Update on duplicate" when importing CSVs
  3. Standardize phone formats — Always use country code (+91...) to prevent format-based duplicates
  4. Keep the more complete record — Choose the contact with more data as primary

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