can't turn off ramp clean up

I’m trying to turn off ramp clean up on tabs to avoid a chipping issue we’re having, but when un-click the box in the tabs menu, sheetcam goes ahead and cleans up the ramp anyway. any idea what the issue may be?

Are you using multiple passes? Turning off ‘clean up exit ramp’ only affects the last pass. It needs to clean up the ramp for previous passes so it can safely plunge.