You can move money from a Cash ISA or Open Access Cash ISA to a Stocks & Shares ISA or 1 Year Fixed Rate ISA in Settings > Move money between accounts.
Please note that only completed deposits will be available to move - you can track any recent payments in Wealth > Select account > Activity.
Moves between ISAs do not count towards your annual £20,000 allowance.
If moving from a Stocks & Shares ISA to a Cash ISA or Open Access Cash ISA, you can only move funds held in your Available Cash balance. If you don’t have any Available Cash, you can add cash by selling down your investments in a specific fund under Wealth > S&S ISA > Tap your individual fund(s) > Sell.
At the moment, it isn’t possible to move money from a 1 Year Fixed Rate ISA to another Moneybox ISA.