IDR invoices routing issue, email sent to IDR email id in CC , creating double invoices

Hi All,

we have found one issue, in which invoice was sent to email address configured using sender Business unit logic, in IDR setup, in CC.

The invoice was created twice in Payables , once with IDR setup Bu and once with the default person who ran the import program.

we want to understand why it happened and why did it created invoice twice?

thanks

harshika