Changed from a private account to a business account. (I did not move)
While it's a PITA that you have to change accounts, it's all-in-all relatively painless.
I did "cheat" their documented process by letting the business apply for an account before I closed my personal one. No, I did not have 2 accounts. The business had one and I had one (business!=me). I did the changeover in the middle of a month. To make sure there's no left-over to-be paid below the threshold amount on your account anymore.
Changing countries might affect you - which countries are we talking about ? E.g. Going between France and Germany will unlikely affect anything, while going from the UK to India might very well affect you.