Creo Flexible Modeling > Modifying Analytic Surfaces > To Define Attachment Options for Modify Analytic
  
To Define Attachment Options for Modify Analytic
You must be on the Modify Analytic Surface tab to perform this procedure.
1. Click the Attachment tab.
2. Set attachment options:
To reattach the modified geometry to the same solid or quilt where it was originally attached, select the Attach modified geometry check box.
To create round or chamfer geometry in the new location after the geometry selection is modified and attached, and to close the gaps created by modifying geometry, select the Create round/chamfer geometry check box. Available when Attach modified geometry is selected.
To store the attachment properties to use when you reattach the modified geometry to the model, select the Store attachment properties check box. Available when Attach modified geometry is not selected.
To create surfaces that connect edges to cover the gap left when a surface is modified, click the Create side surfaces collector, and then select chains to use to create the surfaces.
To open the Chain dialog box, click Details.
To extend surfaces of the selected modified geometry and the remaining surface until they intersect, click the Extend and intersect collector, and then select chains to use to create the surfaces.
To open the Chain dialog box, click Details.
To collect edges that act as boundaries for geometry, click the Bounding edges collector, and then select chains to use to create the surfaces.
To open the Chain dialog box, click Details.
To cycle through the available solutions, click Next to find the next solution, or click Previous to find the previous solution when multiple solutions exist.
To fail regeneration when the model changes and the same solution type cannot be reconstructed, select the Maintain solution topology check box.