Can you migrate Public Folders with Exchange Migrator and reACL successfully without migrating mailboxes?
Exchange Migrator 1.x
Exchange Migrator 2.x
You can only reACL the Public Folders without migrating the mailboxes in an intra-org (site to site) migration. Otherwise, if it is an inter-org migration, you have to migrate the mailboxes first.
Please contact Technical Support to create a Support Request for any issues you encounter that are not addressed by the User Guide, any Knowledge Base articles found on the website, or current Hotfixes or Service Packs available for download.