The choice you make determines which programs are updated when you perform a
Two way: A two-way synchronization updates data
simultaneously in QuickBooks and your contact manager. For example, if Brian
Cook is on the Customers & Jobs list in QuickBooks, but not in your contact manager
database, synchronizing adds Brian as a new contact to your contact manager. If
at the same time Johnny Melton is categorized as a QB Customer in your contact
manager, but is not on the Customers & Jobs list in QuickBooks, synchronizing adds
Johnny to the Customers & Jobs list. At the end of a two-way synchronization,
records in QuickBooks and your contact manager agree with each other.
One way: A one-way synchronization updates data in either
QuickBooks or your contact manager, but not both. When you select One way, you
must also select a direction for the synchronization, either QuickBooks to your
contact manager or your contact manager to QuickBooks. If you plan to make
changes to data in only one application, then a one way synchronization is
probably best for you.