I am looking at buying an used Handi Quilter Fusion with Pro-Stitcher and QuiltCAD . I understand now it comes with design software by Art & Stitch. Is anyone familiar with QuiltCAD? Als how hard is it to go between using the Pro-Stitcher and doing free motion with rulers? Do I have to take the quilt off first? I am sure I sound ignorant and I am so bear with me and enlighten me please.