To figure out what happens to your content when you switch account types, find the scenario below that applies to you.
You join a Dropbox team or trial
If you have an existing free account, you can choose to use the same email address to join a Dropbox team account. All of your docs will move with you to your team account.
You can also choose to create a new account with a different email address. In that case, you’ll start with a brand-new, empty account.