Importing Data-Mapping is not being recognized!

Importing Data-Mapping is not being recognized!

Hello,

I am importing my information from SFDC and I have tried multiple times to import the data with the Account Owner being mapped to one of the columns in the Spreadsheet. I have input all the users into my Zoho CRM and have spelled the names exactly the same however, when the Accounts get uploaded it makes me (Admin) as the Account Owner. 

As a side note- I click the box that says Upload My Organizations Accounts. Please help I don't understand why this is happening!