Deleting the 'aux' layer

• Select the "profile" layer and set it off. Click on the light bulb icon 
• Check that 'Also lower entities' is not checked in the delete menu (to avoid delete the lines of the surfaces)
• Choose Geometry->Delete->All Types (or use the GiD Toolbar).
• Select all the lines and surfaces that appear on the screen.
• Press ESC to conclude the selection of elements to delete.
• Select the "aux" layer and delete it lick in the icon
• Select the "profile" layer and set it on.

NOTE: To cancel the deletion of elements after they have been selected, open the mouse menu, go to Contextual and choose Clear Selection.
NOTE: Elements forming part of higher level entities may not be deleted. For example, a point that defines a line may not be deleted.
NOTE: A layer containing entities will ask for confirmation to be deleted.