To open the Transformation Options dialog box, click Options at the bottom of any Coordinates Transformation for Civil 3D tool.
The Transformation Options dialog box defines what elements should and should not be transformed.
Unlock Layers. Specifies that layers should be unlocked during transformation.
Bind and Explode Xrefs. Allows xrefs to be bound and exploded during transformation.
Move Locked COGO Points. Allows locked COGO points to be moved during transformation.
Copy Survey Data (Points and Figures). Copies and moves survey data during transformation.
Unlock Layers. Allows location based event points to be moved during transformation.
Specifies the method of interpolation of the datum during transformation. Select either Bi-linear or Inverse distance weighted.