Post your F3D and I can show you exactly what went wrong with your tools path.
normally fusion “discards” any contours that the total of the “linking constraints” will not fit into. you can see on the left in the browser bar the yellow triangle with exclamation mark on profile alerting you to the paths being discarded
“linking constraints” are the lead in, lead out, pierce clearance, kerf width, etc all the option in the “linking” tab of the 2d profile menu .