Rename references in a library part

Hi,

  I would like to rename the references in a library part I'm creating.  This is really just for ease of use, I have been able to change them in the past but I'm having difficulties now.  Even in this drawing I am able to rename the "Sketch Plane" and the "Point Location" but I can't rename the "Extrude Cut Direction" or the "Edge1."  This library part was copied from another part and that's where the custom names come from but now the two I mentioned can't be renamed.

Thanks for the help.

SolidworksParts And Features