Some Groupwise users have sub folders under "Cabinet" in Groupwise and one shared folder within the same cabinet. Following the migration, the delegate correctly receives a "Folder visible" permission set on the parent "Cabinet" folder and a shared child folder in Outlook. However, delegates are also granted access to see other child folders within the parent "Cabinet" folder.
The delegates cannot see the contents of the other Visible folders but they can see the entire folder structure of the owner.
This issue was found to be the way that Outlook sets inherited permissions and not a problem with Groupwise Migrator for Exchange.
If the outcome of the "Folder Visible" permission is not suitable then to workaround this issue either remove the permissions before migration and re-set the sharing in Exchange/Outlook as required or update permissions using Powershell following the migration.
It's also possible to disable ACL Migration in GME using the ACLs=0 parameter. Using the ACLRootVisibleOnly=1 and MigrateEmptyFolders=0 is also set then the visible and empty folder structure should also not be migrated.
Please see the GME_INI_Reference.PDF document supplied with GME before setting this parameters.