If you are looking for a tool which can effortlessly convert your Groupwise mailboxes into Outlook PST format then, you also try Shoviv GroupWise to Outlook Converter which is designed to convert multiple GroupWise mailboxes into Outlook without any alterations. Using this tool, you also save GroupWise mailbox data into several formats such as EML, MSG, and HTML. It supports all GroupWise and MS outlook version. The trial version allows you to convert 50 items per folder as well.

For more info visit here: http://www.apsense.com/article/how-to-export-groupwise-mailboxes-into-outlook-pst.html