Public folders are different from one organization to another. Many native methods are available for the migration of public folder but all those require complex power shell scripts and also they will consume more time. So it is better to opt EdbMails Exchange migration tool which allows the migration of public folders from any Exchange version.
You can easily migrate public folders from Exchange servers with simple steps. You try out the demo version which allows you to migrate 30 items from each and every folders to check functionalit