if I create a boolean difference of A - B than I get C. An option allow to choose to keep B. That’s was the workflow at Rhino 7. But at Rhino 8 I get A and B and C. I need to manual delete A always. I hope it’s a bug and can be fixed, the Rhino 7 workflow was fine.
Great. I had not activated “delete input” because I wanted to keep the cutter as in Rhino 7 and so the new option was not visible. It works like expected now. Thank you.