If users want to move from Windows workstations to Linux or Macintosh, they first need to install the Cross-Platform client, as described in Setting Up the GroupWise Cross-Platform Client. They can then immediately use the Cross-Platform client to connect to their GroupWise mailboxes, regardless of whether the mailboxes reside on Linux, NetWare®, or Windows servers.
If users have Caching mailboxes or archives on their Windows workstations, they can simply copy them to an appropriate location on their Linux or Macintosh workstations, and then, in the Cross-Platform client, update the file location information accordingly (Tools > Options > Archive Directory and Caching Mailbox Directory). Remote mode is not currently supported in the Cross-Platform client, so Remote users should not copy their Remote mailboxes to Linux or Macintosh.