Be sure that the outline is not just "hidding" behind the traced bitmap. One way to ensure this is to copy your traced outline to a second page. When you are sure it is saved, then you can delete the first page and the original image. This can sometime happen too if you are editing the bitmap (i.e. opened the bitmap in Corel Draw as opposed to importing it). When you click save, you are saving the vector back to raster, and incorporating it into the bitmap. B ut that is just a guess. Copying the outline to a second page should resolve any issues (to create a second page, hit the " + " sign on the page counter at the bottom left corner of the layout/screen.
