Termination

I have originally reg. under pcc and started my articleship on may'08.
I have converted into ipcc on jan'09 with continuing my articalship.

Now, I have cleared first grp of ipcc & wants to terminate the office (from backdate, most probabily before result)and join to new ca whats the procedure?

The most imp. thing is can I do so?
(Is it all legal)

and also I am reg. in cuttack and wants to rereg. in cuttack only.