SVG files not converting correctly

That's pretty typical of Adobe files no matter what RIP does it. Did you already convert to curves (outlines)? You may need to weld them together in Illustrator.

 

obviously, not. Is there an additional un-welded outline in play?

 

AI files aren't meant to be used as production files, even if some RIPs support them. You should be using PDF or EPS, and that might solve your problem.

Occasionally AI files will produce unexpected results in non-Adobe apps, because an AI file typically has two copies of the artwork in it, one coded for Illustrator, and a PDF copy for linking with other Adobe apps. Neither of those two formats inside your AI file are meant to be used outside of the Adobe universe.

 

Instead of looking at the .ai file, what does the exported SVG file look like brought back into Ai?

 

I'm not familiar with Onyx. Based on your first post, I thought you said you were loading .AI files into Onyx. I was wondering why you mentioned SVG in the title.

I'm happy to take a look at your AI and SVG files if you want help solving the problem.