I have created a Custom Group for Events. This Group has one custom field Organizor which is a autocomplete with contacts. But on merging the contact the Organizor custom field is not updated accordingly.

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This is something not handle in CiviCRM at the moment when two contacts are merged. I am not sure if any one has submitted fix for this issue. You can either fix this by adding code to update contact_id for all contact reference custom field in core or through hook_civicrm_merge hook via extension.



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