Ok I've just received my new coins manually from nrigo. They came through quickly and were confirmed almost straight away.
The process took over half an hour (no fault of nrigo) and was quite involved as there were a couple of anomalies to iron out.
IMO the manual changeover will take a while - probably longer than the 24-48 specified. Everything has to be verified obviously.
Patience and understanding will be needed by everyone as this process unfolds.
Rest assured, you can trust the team, your coins are safe and they will get around to you as soon as they can.
Oh and thanks again nrigo. Your time and efforts are greatly appreciated.