About Editing the Geometry of Import Features
After you import part and assembly models or import and insert the non-native part models in the existing parts, you can redefine the imported features so that the resultant geometry suits your requirements. While you cannot selectively replace the geometry of the import features or selectively add geometry to the imported features, you can use the editing tools available on the Import tab to edit the reloaded or replaced geometry according to your requirements. You can use Import DataDoctor (IDD) to retain or remove surfaces and entities of the reloaded geometry. You can collapse features and geometric entities, including solid features, into standard or neutral import features or independent geometry features. You can then use IDD to modify the geometry of the collapsed features as they are part of the import or the independent geometry features after the collapse operation.
Using the following options on the Import tab to redefine the geometry contained in the solid bodies of the imported features can result in the quilts of the imported features failing to close and solidify and the creation of empty bodies.
• 
Add Bodies—Creates solid bodies that correspond with the bodies of the imported feature and includes the new bodies in the existing parts.
Add Bodies—Creates solid bodies that correspond with the bodies of the imported feature and includes the new bodies in the existing parts.• 
Add Material—Merges the solid geometry of all the bodies of an imported feature and adds the merged geometry to the default body of the part.
Add Material—Merges the solid geometry of all the bodies of an imported feature and adds the merged geometry to the default body of the part.• 
Add Surfaces—Adds the geometry of the import features as surfaces in the existing part without contributing geometry to the solid body. The solid geometry of the bodies of the imported feature is available as quilts.
Add Surfaces—Adds the geometry of the import features as surfaces in the existing part without contributing geometry to the solid body. The solid geometry of the bodies of the imported feature is available as quilts.When you select this option on the Import tab, the geometry of the imported feature that is represented by the body node on the Geometry and Structure (GTS) Tree remains unchanged. However, the surfaces and the solid quilts of the body node are considered as non-solid geometry and the solid geometry of the body node is available as quilts.
You can then click 
on the Import tab to enter the IDD environment and repair the quilts of the imported features that fail to solidify until they are closed. The resultant solid geometry then populates the empty bodies.
on the Import tab to enter the IDD environment and repair the quilts of the imported features that fail to solidify until they are closed. The resultant solid geometry then populates the empty bodies.Additionally, when you reload a source file or add geometry from a file that consists of standard or curve-type import features, all geometry that you add or reload from the selected file creates a separate node in the GTS Tree. The solids of the bodies in the import feature are added as quilts to this new top-level ADD_1 node on the GTS tree. The ADD_1 node is a non-solid node that consists of quilts. You can then access IDD on the Import tab to retain or delete the quilts in the new node.
You can edit the geometry of the new node in IDD as follows:
• Delete data that you do not require from the new node.
• Delete the original surfaces that you want to replace with the new surfaces.
• Sew the newly added surfaces into the old quilts as required.
If the import feature is ATB-enabled, you must make sure that the import feature is made independent and is not ATB enabled before you edit the geometry. Otherwise, the editing changes are lost when you update the model using ATB.
If you delete reference entities or the entity IDs of ATB-enabled import features while using Import DataDoctor, Creo Parametric warns you about the incomplete reference pairs when you exit the Import tab, especially when the entities are parents of downstream features. You can then click > on the Import tab and complete the reference pair matching.