Is there a way to add a "class" to existing customer invoices all at once instead of doing it one by one? We have some customers that are wholesale, and others that are retail and I'd like to go back through 2014 and classify them accordingly. But given the number of customers in each class, and then the number of invoices for each customer, it would be too much time spent doing that. Also, any work around would be great. I just want to see an P&L on each class to see how each segment of my business is performing.