Bulk 2 - Sync Rejects

I'm trying to retrieve entities which were rejected by an import sync. The API returns a list of all entities whose fields were invalid but does not return the invalid field value. For example, if I try to import a contact with an invalid email address the 'sync rejects' response will not include the actual email address that was not valid. The response looks something like this:

{"items":[

     {"fieldValues":{"C_EmailAddress":""},"message":"Invalid email address.","statusCode":"ELQ-00002","recordIndex":1,"invalidFields":[]}

...

]

I would expect the 'fieldValues' array above to contain the bad email address. Is this by design or am I misunderstanding how this works?

Thanks,

Ilya