If you stuck to Corel for the editing and cutting you'd be fine. I do not use any CAD programs, but when people who do send me their DXF or DWG files I always have problems when importing to X3 (same with v.12).
In some cases a curve will be hundreds of point connected by short lines, reulting in ridges when cutting. In other cases there will be 30+ lines on top of each other, so that it makes the same cut over and over and over again. One person who is a regular customer uses Solidworks, and eventually figured out how to provide a clean vector file for cutting, but these bugs in translation are very common and different depending on the cad program.