Cisco ISE, Release 1.4 supports restore from backups obtained from Release 1.2 and later. Yes while restoring the configuration on ISE 1.4 - don't select "include-adeos" - this actually have the ip address and other information that we don't want to overwrite.
Here is a procedure:
When you take backup on ISE 1.2 use the below listed command:
backup [{ backup-name } repository { repository-name } ise-config encryption-key hash | plain { encryption-key name }]
Command Reference link
When you restore the same configuration on ISE 1.4 use this command:
restore [{filename} repository {repository-name} encryption-key hash | plain {encryption-key-name}]
Command reference link
~ Jatin
~Jatin