If you have an entire team that is moving to your club you can import that team account using their Username and Password. By importing a team you be sure to hold on to any history and rosters for that team.
Once logged in to your Club/Organization account, click on the blue "Club" tab.
(Depending on what state your located in it may titled "Home Association")
Click on "Teams" in the black menu bar across the top of your screen.
Click the import team button in the grey menu bar across the top of your screen.
Enter in the team account's username and password and click "Import."