Apologies for a non-specific question - I found it impossible to express it within the 150 character limit.
I have paid some money to my old Cash ISA this year already. I want to open a new one and I know I can do it as long as I transfer the balance. Does that refer to the entire balance of my existing ISA or only on the amount paid in this year?
This follows up my previous question relating to HTB ISAs.