Can I copy field mappings?

There is a clone button that appears on the top right of the field mappings screen.  This will allow you to select one or more subscriber lists to copy the field mappings to.  This process will both create the new fields in Campaign Monitor as well as the mappings to their Salesforce counterparts. 

Fields need to be mapped for this process to work i.e. fields will not be created in Campaign Monitor if they are not mapped to Salesforce fields.