I'm really sorry to hear about your bike. I know this feeling from first hand.
I reckon stolen bikes like this are stripped onto parts and sold on eBay or transformed onto track bikes (who cares about reg on track days?) of course some may be exported abroad. Long time ago they were cutting hands if they ccought theft , so he couldn't steel and everyone knew who is he. They should never stop this but add extras on top of it. There are no words to describe what I think about theft
I hope they will get them, keep an eye on eBay and parts sellers. My friend found his r1 3 years later on eBay .... Frame had different number but he had custom painted wheels and faring