GroupWise Migrator for Exchange enables organizations to migrate from GroupWise to Exchange and Exchange Online with high data fidelity and minimal user impact.  The tool allows you to migrate multiple users simultaneously, significantly speeding up the process.  This tool also simplifies administration by automating manual tasks, including mailbox creation and mail routing.  This saves time and prevents errors.

http://www.quest.com/events/ListDetails.aspx?ContentID=7946

 Whitepaper finnes her:

https://www.quickstartonlineservices.com/Documents/BPOS Showcase Solution Brief Quest GroupWise Migrator for Exchange.docx