If you are already synchronizing data between your GroupWise and Exchange systems, it is vital to consider how to handle the existing data in each system. Sync solutions transfer users and attributes in various ways and to various locations in the GroupWise and Exchange systems. If you need to retain previously synced users and any modifications made to those users, some customization of the process of setting up the GroupWise/Exchange coexistence solution might be required.
You might be able to implement the GroupWise/Exchange coexistence solution yourself, or you might be benefitted by the participation of Novell Consulting as you prepare to implement the GroupWise/Exchange coexistence solution.