One of my customers spun out a division into a new, totally separate company.  I don't want to lose the history between the new and old customer.  The people are the same, but the emails are different.  I figure I can setup a new company and just go back-and-forth between them for history.  However, is there a way to have everything show up under one customer account so I can see everything in one place?  If I change the customer name, I lost what was under the old versus the new.  Anyway, any thoughts would be appreciated.