Exchange Migrator 1.x
Exchange Migrator 2.x
Public Folder synchronization process deletes the fowarding email addresses on forms within a Public Folder.
Exchange Migrator does not support migration of Forms in public folders. Since standard PF messages do not have email addresses, EM is not designed to handle email addresses during a Public Folder message migration or synchronization.
This is by design. A workaround is to not select the public folder for synchronization. You can also add another forwarding address on the source form to point to the target Public Folder email address.