Define the authority model
Agree which model controls the design. Preserve the exporter version and settings together with the neutral file. A comparison between two neutral files does not independently validate a native source.
Check more than a bounding box
Inspect transferred geometry, available PMI and assembly structure. Matching volume or extents alone cannot establish complete shape equivalence.
Keep the result reproducible
Retain the input identities, method, units and reported scope with the review. Use independent source checks when the downstream requirement calls for native-to-neutral validation.
Current product boundary
PartDatum Compare supports STEP and mesh workflows. Direct native CAD readers and the planned Validate rule checks are not part of the current release. No OEM or LOTAR approval is claimed.