Part Modeling > Part Modeling > Edit Features > Move > About Redefining Legacy Data that Uses Coordinate System or Two Datum Points as Direction Reference
About Redefining Legacy Data that Uses Coordinate System or Two Datum Points as Direction Reference
Features created in an earlier release of Pro/ENGINEER can have the following as direction references:
Two datum points or vertices
Datum coordinate system
Legacy parts with such features are redefined when opened in the current release of Creo.
Redefining a Feature with Two Datum Points or Vertices as Direction Reference
When you open a part with a feature that uses two datum points or vertices as the direction reference in the current version of Creo, the Reference Selection dialog box opens stating that the use of two datum points or vertices as references is not supported. If you have deleted one of the datum points, it warns you that you have deleted one of the datum points.
If you click OK in the Reference Selection dialog box to remove one of the datum points or vertices, both the datum points or vertices are removed, and the Direction reference collector is cleared. You can directly select a datum axis that passes through these two datum points or vertices.
If you click Cancel in the Reference Selection dialog box, the system analyzes if either the datum points or vertices are used or both, and datum points and vertices are used as the direction reference. The Direction reference collector displays the two datum points or vertices as the direction reference. Both the datum points or vertices are redefined such that the direction reference passes through these two datum points or vertices.
Redefining a Feature with a Datum Coordinate System as Direction Reference
When you open a part with a feature that uses the datum coordinate system as the direction reference in the current version of Creo, the Direction reference collector displays the used axis of that datum coordinate system as the direction reference. You can also set the Direction reference collector to define an axis of a coordinate system as the direction reference.