Thanks all for the input and comments thus far.
I know that DNA has no specific obligation to provide documentation, beyond the conventions and expectations of helping a customer, so I know this is on me. However, it's pretty disappointing to see the cowardice of a motorcycle manufacturer in the face of a trifling, debatably imagined, concern over legal liability.
Keeping it Canada registered is something I looked at, but my home province refused to re register it without it inside the country. Besides that, and in keeping with the theme of legal liability concerns, I wouldn't be comfortable knowing that my insurance was on shaky ground.
So when Ducati doesn't want to venture into legal liabilities they are cowards, but when YOU may face financial burdens its a different story? Let me guess, you bought the bike used, and now expecting preferential treatment because you're such a great customer?
If you have a local address how does the province know the bike isn't there? Do they need to see it to renew the registration? (Honest question, I don't know). Can you get insurance in the US for a bike that's registered in Canada? I don't know that either. Should we discuss if your concern over potential legal liability is imagined?
A possibility has come up to have the bike imported by an official importer. Though this is not without cost (and a month waiting out a grace period), it would at least mean that I get to keep the bike. It would unfortunately also entail swapping out my beautiful Termi exhaust system for the stocker, too.
You realize you wouldn't have to surrender the Termi exhaust, right? Put it on for the customs inspection, take it off when you get the paperwork signed. Stock Hyper exhausts can't be hard to find. It's not rocket science switching them. FFS if you aren't even willing to do that just ship it back, buy a Yamaha (That'll show those pussies at Ducati!) or whatever and get on with life.
A couple misc thoughts garnered from 30+ years in the OEM exhaust development world (as in dealing with gov't requirements) and 25+ years dealing with Ducatis.
Letters of conformance are neither standard nor ubiquitous
EPA compliance is not a trivial thing
ECUs are kind of a big deal in the compliance world.
Ducati doesn't give a shit about bikes they've already sold. Certainly not ten year old bikes.
Good luck... and realize you're going to have to pay a tariff(?) on the bike if/when this goes through. Tariff may not be the right word but there will be a fee for importing an Italian vehicle. I think it was around $200 for my 851, no idea what it will be for you. And there's the cost of the new gas tank when our ethanol laced fuel ruins the stock one...