CSV customer import now supports both creating new customer accounts and bulk updates.

The CSV Customers Import functionality of the control panel has been updated to better support two different use cases: importing new customers and mass updating existing customer accounts.

• Creating new customer accounts:
  Remove the customers_id column completely from the CSV file. This tells the system that this is a new customer for whom a new customer account will be created.

• Updating existing customers:
  Retain the customers_id column and ensure that the ID in the column matches the current customer identifier in the system. This will ensure that changes are directed to the correct customer account.

This change enhances the security and clarity of CSV imports and reduces the likelihood of errors in large customer data sets.