I need the section cuts but not the section lines. How do I delete the lines?
when using default SU styles in a “Style” layer, Section lines become visible because this option is set into SU’s style. You could solve the problem creating your own style with this option turned off. We’re planning to add this option into one of the next SketchFX’s releases.
I understand that you want to get rid of section planes - just hide them. Select section plane you want to remove, right click and choose hide.