Nice someone has started this thread.
I have a similiar query/
When I shifted base to bangalore from Bombay, I got my tata Sierra here. I got the car registered here (KA) and paid the one time tax....but I was given the option to retain the MH number, which I still do. Recently someone said that I need to get it changed To KA no. Is that so??? hardly got the time to do it...since Im in Kl now and the Sierra is parked in Bangalore.