Quick test confirms it was "Combing" control.
At least for Cura 3.2.1 setting "Combing" to "No Skin" has removed the extrusion between enclosure penetration features, i.e. button openings etc. Whether there will or will not be travel extrusions, not wanted, is known within the first few minutes of starting the print. Will run full print and see what "No Skins" in "Bombing" inadvertently might change...hopefully nil.
GR5 thanks a ton....your batting 1000
Gene