exchange incremental migration and folder selection
There should a possibility to do incremental migrations with the kerio exchange migration.
This way there can be done a full synchronisation at first, and later an incremental synchronisation. This helps migrations from exchange to kerio, since you have more time for testing.
There should also be a possibility to define which folders/calendar/... must be migrated. This isn't possible with the current tool. (there's for example no need to migrate "Deleted Items")