ISAs re-organising finances

I have opened an stock & share ISA last year and plan to open a LISA this year. I wanted to transfer my old cash ISA to a new fixed rate isa with the same provider as currently im not getting the best interest with my cash ISA. my question is, can i transfer cash ISA to a fixed rate ISA before April tax year or should it be after April beacuse im little confused as to how many isas you can have in one tax year, especially this coming April time? A simple explaination required for novice

Hi OJA02590,
Yes, you can transfer at any time:
Individual Savings Accounts (ISAs)
Thank you.