Visitor Loyalty

We seem to be having an issue with our Visitor Loyalty report where the New Customer is defined as 'A user who enters the site and makes a single purchase is considered a "New Customer."' Unfortunately, we are seeing that Visits from a New Customer is equal to all Visits to the entire site. This metric is supposed to be measuring Loyalty based on purchase. So if the new user does not purchase, they should not be counted. 

Anyone else experience this?