We use Enterprise Desktop for Contractors. We job cost. We have a HUGE company file that has been accumulating for 10 years. We want to start an new company file and start the accumulation over. Has anyone done this? Can you give me some wisdom? I understand I can bring over lists and manually enter balances. What about estimates, POs, invoices and the like that are in  progress when we switch over? Can we import them as well even though they are attached to old and new transactions?  We are thinking about making the change Jan. 1 2018 for tax purposes. Is there anything we need to make sure we do before starting over? Do we need to do anything special with Payroll?