I created a number of private Trello boards on another company's account. I am not an administrator. Can I move those boards to my own new account? How do I do that
If you're admin of the board (not the team), and the board is currently associated with a team, you can change the visibility back to private. If you have separate (personal and business) Trello accounts, you'd need to add your personal account to the board, make it admin, and then remove your other account.
Hope this helps