In which countries T212 is available and what if moved abroad

So what happens if I have both Invest and ISA? Do I have to sell everything from my ISA and move the money to the invest account? (or even worse, do I have to close both invest and ISA??)

My understanding is that in general, once you’re not a UK tax resident you can keep your ISA but you’re not allowed to further contribute to it. It would be great if you could allow this.