Migrate to the Enterprise Account

Hi Hitomi,

Welcome to the Box Community, I'm happy to help!

If you need to migrate your Personal Box account into an Enterprise Box, kindly reach out to the Enterprise Admin managing the account, they need to manually add you in the Admin Console > Users and Group > Managed users list and which will prompt an invitation for you to join their Box Enterprise as a managed user.

Once the Admin has sent the invitation, you have to login to your Box in Box.com and accept the invite, once you've accepted, your account will be rolled in to their Box instance.

This process was further discuss in this article: https://support.box.com/hc/en-us/articles/360044195233--Invite-Existing-Box-User-Message-When-Adding-User 

Let me know if you have any questions and I will do my best to help you!

Regards,