Just noticed that when i save and load a material it does not seem to save to Plunge Safety Distance value??
Or it does not update it when saved again, one of the two.
BTW what does this value do??
When the Z axis is above this value, the axis moves at machine rapid speeds. When it gets to this value (and lower), it uses the stated feed speed. So, if you had a rapid clearance of 25mm and a Plunge safety clearance of 5mm, the z axis will raise to 25mm to move to the next operation, rapid down to 5mm and then use a feed speed to lower down to/into the material.
At least that’s how it works with my setup. HTH
Paul
Ahh that would answer why i don’t see this then - my plunge clearance seems to be stuck at 0.5mm which is so low as to be dismissed.
When i update it to say 5mm and re-save the material it does not save the change. I will try creating a new material later.
does not work on a new material either 
can this be fixed???
I’ll look into fixing this.