The two‐stage process discovered in the recovery of deformed amorphous polymers (PS, PMMA, and PC) is verified in this study. The first stage which takes place belowTgreleases part of the stored energy (part 1) and recovers the volume. The second stage which takes place aboveTgreleases the rest of the stored energy (part 2) and recovers the dimension. The relation between the part 2 stored energy and dimensional changes during deformation is the same as that during recovery. In this study, the dimension is constrained not to change during recovery. As expected, the part 2 stored energy is not released but the part 1 stored energy is released as usual. Furthermore, if in a second scan the constraint is removed and the dimension is allowed to recover, the part 2 stored energy is then released. These results confirm the unique relationship between dimension and the part 2 stored energy and the separability of the two‐stage recovery process.