tylerhoward
New member
Contact duplication usually happens during CSV to VCF conversion when the same contact appears multiple times in the CSV file or when the conversion process does not handle matching fields properly. Manual methods increase this risk because they lack filtering and proper field control. To avoid duplicates, first clean your CSV file by removing repeated entries before conversion. Using a reliable offline WholeClear CSV to VCF converter helps, as it preserves contact fields accurately and processes all contacts in one go. Bulk conversion with proper mapping reduces duplication and keeps the contact list organized. You can easily try it for free.