Best practice for exporting model to Aspire for CNC: Baseboard reproduction

Hello,
I need to reproduce 40" of discontinued baseboard on a CNC router…
Toolpaths will be created in Aspire (Although Vcarve users may also know the answer).

Also, I only need the upper profile milled, but NOT the flat (factory) face below it…

Anyone know the workflow to import/ generate a toolpath in Apsire?

I’m happy to pay if someone has a ready made solution, or wants to generate this for me…
Thanks!