I need a suggestion from experts, Presently what we are doing these days is to migrating our ePO server from 4.6.8 to ePO 5.1.1 as recommended by McAfee and for encrypted laptop ( DE 7.1), we are installing McAfee Agent manually or by Transfer systems option and adding users again in Encryption users and users have to do reconfiguration of their credentials and security questions after successful migration, which I don't want. Is there any option in ePO, If we migrate encrypted machines, all settings including credentials and security questions get migrated to new ePO.
No. It's not possible to move users between EPO databases. If you want to keep the credentials, you need to upgrade your existing EPO, rather than starting fresh.