"We contacted the Rangers to find out what became of the original banner, and were told at first that they'd look into it. But when we didn't get an immediate answer — which is really pretty understandable; we imagine they don't field a lot of questions about fifteen-year old banners — we began to wonder if perhaps a conspiracy was afoot. Did a bunch of Devils fans sneak into the Garden late one night and steal it in a college rivalry–style prank? What were they hiding?!? But then, after more persistence on our part than the topic probably deserves, an answer: Some of the Garden banners had started to tear, and were replaced in 2009. The original banner? The one being raised in the video below? Now in storage at the Garden. Mystery solved. You may carry on with your day."
...knowing the Dolans they probably sold it to the highest bidder.
...h/t to reader Nick for the link.