Vectric Customer

Hello everyone. I just a newbie into CNC world. I have a Cut2D desktop edition and UCCNC that drive my CNC machine. My question is that when i open my saved toolpath with UCCNC , my work-piece is not the same. I mean the whole project is shifted , and it will move beyond my work piece limit. I set everything in mm, both the toolpath and my UCCNC. I used the post processor as Mach2/3 arcs mm *text. Is this the correct post processor ?

Thanks