Column "customerEmail" is required

[TheKnottyCelt]

This issue is about https://kb.x-cart.com/import-export/csv_format_by_x-cart_data_type/csv_import_orders.html (source file: https://github.com/xcart/xcart-docs/blob/master/_pages/kb_en/import-export/csv_format_by_x-cart_data_type/csv_import_orders.md)

When running an import with a CSV containing all fields marked as required, the import returns the following critical error:
Column "customerEmail" is required

"customerEmail" does not even appear in the list of columns. Perhaps it ought be added?