Use WCV: data workbench uploading marketing attributes

Hi,

We want to upload some data for the marketing attributes in the account object. We asked this functionality to SAP support and we got some steps to follow:

"To mass upload marketing attributes for accounts you can use Workbench available in C4C. Please navigate to WoC Workbench>import>choose the object as per your usecase>download CSV" Fill data & upload into system."

I followed these steps

But I don't see the necessary object for marketing attributes for accounts. When I download a certain file (Template_BusinessAttributesSetAttributeAssignment.csv) I only see data in one cell:

Is there something we're doing wrong?

Thanks!