7.5.2. 6.1 and 6.2 Data Recovery Manager (DRM) Migration
Determine if the migration to be performed involves software security databases, an HSM, or both. There are four possible migration scenarios; follow the appropriate process for the deployment scenario being migrated.
Archived keys stored in the 6.1 (SP4) DRM cannot be migrated to Certificate System 7.1 or higher because the old key-splitting scheme is not supported in versions later than 6.1 (SP4). To be able to recover these keys, obtain a migration patch from Red Hat services.