About Using Datum Planes with Legacy Data
For datum planes created in the earlier versions of Pro/ENGINEER, the datum plane adjusts its boundaries as follows:
• Radius values specified
• The size of the selected references, such as a part, feature, edge, axis, or surface
Using Legacy Datum Planes with Size Adjusted to Specified Radius
For legacy datum planes with radius dimensions that determine their size:
• The radius dimensions of the legacy datum planes are not retained if you have redefined the datum planes in the current version of Creo.
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 When the radius, which is the outline dimension that drives a relation, is not retained but is changed to the height and width values during redefinition, the relevant relation is also no longer valid. |
• The radius dimensions of the legacy datum planes are retained if you have not redefined the legacy datum planes in the current version of Creo.
When the radius dimensions of the legacy datum planes are retained, you can redefine and change the radius dimension in the current version of Creo. The height and width values of the displayed outline of the legacy datum plane are displayed in Width and Height boxes when you select the Adjust outline check box and select Size on the Display tab of the Datum Plane dialog box. The outline handle is displayed and you can use the handle to enlarge the boundaries of the datum plane.
Using Legacy Datum Planes with Datum Coordinate Systems or Point Features as References
If you redefine legacy datum planes with datum coordinate systems or datum point features that include only single points, the current version of Creo displays the datum coordinate systems or the datum point features in the Fit Outline reference collector on the Display tab as references to which the legacy datum planes adjust their size.
If the datum point features consist of more than single points, you can retain a single point in each feature and delete the rest of the points. The datum planes adjust their size to the reference datum point features with single points. During the redefinition process, you can replace these datum point features with valid references.