When you use enhanced import to import metadata in Enterprise Data Manager, the option "commit after each file" has been disabled.
A check has been implemented to verify that XML files exported in one version of Data Archive are imported in the same version.
A check has been implemented to restrict the enhanced import of any files generated using traditional export.
When you upgrade to version 6.4.4, existing users will not be able to import metadata or accelerators unless the user is assigned the Import Metadata role.