A root store administrator can export user account information to CSV format and import new user accounts in the store Admin area.
To export users, click "Export all: CSV" at the bottom of the user list.
X-Cart 5.4.x - Users > Users List
X-Cart 5.5.x - Store > Users
NOTE: To export just a few specific users, select users from the list and click the "Export selected: CSV" button. This button will display in place of the "Export all: CSV" button after at least one user is selected.
A root store admin can also import/export users via the built-in Import/Export tool. See Importing Users for details.