When you transfer a domain name to a new host do you loose the years you had registed it for with your old host and have to renew it again.
I ask this as my domain Renewal date was 29-Jun-2009 and i just got an invoice from webhostinguk to renew for another 2 years.

But the Due Date for the payment on the invoice says 0000/00/00, i paid the domain transfer fee invoice then got this renew invoice the day after.