imcold concerning the teared apart edges.
Check this out: 3ds sample file
Here is what hap with lots of messy/many polygons model in pepa all at once. You've got to see that edges can not be joined somewhere, due to that. What else?
All the same, but imported from Max by one detail/just few.
And, what about SVG,
---.zip n.p. check it. But not sure that Corel can get rid of that wires.
Seems to be that the prog is pretty raw yet.
Distortion or wrong scale, whatever. Imported dxf is ok, 'couse, checked that with 10x10mm dxf cubes before )