PartDto had no field for Part.CuttingParameters, and restoring a saved
program cleared it, so after save and reopen the lead and pierce-zone
reviews judged manual and planned leads against the plate's settings
instead of the ones they were built with. Undo/redo will restore nests
through the same reader, so it would have carried the same loss.
The settings are written only beside a saved part program and read
back after the program installs. Older files and clean parts read null,
as before.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>