Here’s an interesting data point, before going any further. All I did was open your “UH-60 profile export.svg” file in Illustrator and immediately re-export it with the following unauthorized settings:
and it loads fine. File attached if you want to confirm for yourself. The holiday houseguests have started to arrive, so I may not have more time tonight to search for the option that breaks it, but this may at least help to explain some of the controversy. There are enough checkboxes and menus in both Export and Save As that two people can be having an argument over whether it works or not, and both of them are right.
Unless I’m mistaken, a score wouldn’t have handled the varying line weights in the original art. Everything would have been reproduced with a single “laser-width” weight, and thus the variation in the drawing would have been lost.
One way to get varying line weights is to have them different colors in the art. Then either do different levels of power/DPI or defocus the laser for the lines (colors) you want to be darker. You get vector score speed with similar results to engraving varying line weights.