From Dynamics 365 online, I've exported a list of contacts from CRM and that need a re-import after updating a few details like address or phone numbers.
For re-import, I selected No to Duplicate contacts but I came across a failure that these records are already exist in CRM.
"
| A record with these values already exists. A duplicate record cannot be created. Select one or more unique values and try again. |
"
Any idea to have a re-import in dynamics 365?






