Calendar items can only be restored using Access Mode.
Access mode has the Client access the Reload POA directly where the item or items can be archived and then unarchived once attached to the production GroupWise server.
Personal archives must be enabled in GroupWise Administration.
If needed, enable the access mode POA in Reload Web Administration Console | <Profile> | Configure | User Access to Backups
Load a backup on the Reload server from a time period where the item existed
The address the client must connect to can be found in the Reload Web Administration Console | <Profile> | Backups tab | GroupWise Client Access to Reload Backups
Open the GroupWise client and connect to the POA on the Reload server
Select the calendar item to restore
Right-click and select "Move to Archive"
Close the client
Reopen the GroupWise Client and connect to the POA on the Production GroupWise server
Select "File | Open Archive"
Browse to the item
Right-click and select "Unarchive"