A method, system and program product for migrating an integrated circuit
(IC) design from a source technology without radical design restrictions
(RDR) to a target technology with RDR, are disclosed. Also, a method,
system and program product for migrating an integrated circuit design
from a source technology without RDR to a target technology with RDR in
which space may be reserved for late insertion of a feature and in which
migration first occurs in a primary compaction direction having less
tolerant ground rules.