Map information Excel-Zoho campaigns - importing new contacts

Map information Excel-Zoho campaigns - importing new contacts

Hi Everyone, 

Importing new contacts, means you have to map all the information from excel into Zoho-campaigns. 
However, not all fields in excel can be uploaded or matched in Zoho-Campaigns. An example: the excel sheet contains all info concerning "opt-in" or "confirmed time" Unfortunately these fields aren't visible in Zoho-campaings.

The result:
  • I can't see instantly who is opted-in or opted-out for example.
  • It is not possible to map all information.

Is there a way to make all hidden fields visible in Zoho-Campaings?