Error in Import of Supplier Contact via FBDI template

Summary:

Error in Import of Supplier Contact via FBDI template: import results in an error with "The value already exists. You must provide a unique value."
Supplier has multiple contacts and only 1 contact is updated per load. Is this the standard functionality?

example

Supplier Name Email Email New
1. Oracle1 oracle1@gmail.com testemail@gmail.com
2. Oracle1 oracle2@gmail.com testemail@gmail.com
3. Oracle1 oracle3@gmail.com testemail@gmail.com
4. Oracle1 oracle4@gmail.com testemail@gmail.com


Only the first record is updated after import, the other lines are not imported with error "The value already exists. You must provide a unique value."