I have a 3GS which I bought here in the UK in January of this year. I attached my pre-existing UK iTunes store account to it and started downloading apps to it, both free and paid.
I am now starting the visa process to emigrate to the US and have opened a US bank account for which I have a new iTunes account, attached to my US debit card.
As such, I now have some apps on the UK iTunes account and some on the US one. Is there a way to transfer the registered details over, or am I out of luck?
It's not a huge issue if I have to purchase some of the apps anew (it'd give me a good excuse for a tidy-up!), but I'd obviously prefer not to
I probably should've just changed the bank details of the existing UK account, but too late now 
I am now starting the visa process to emigrate to the US and have opened a US bank account for which I have a new iTunes account, attached to my US debit card.
As such, I now have some apps on the UK iTunes account and some on the US one. Is there a way to transfer the registered details over, or am I out of luck?
It's not a huge issue if I have to purchase some of the apps anew (it'd give me a good excuse for a tidy-up!), but I'd obviously prefer not to