I have customers that are associated with more than one company. For example, they have their own business and also make purchases for the local fire department. Inksoft won't allow a contact to have more than one company nor will it allow the use of the same email with different companies.
I also have schools that have different departments that purchase from me. I can assign the school to different contacts but when I push the order to quickbooks, Long trail school orders are now separated by the different contacts. So there is no way to really look at what long trail school is doing.