Can’t import sizes variations (through CSV file)

Hi there,
I am trying to import products using Woocommerce built in CSV import feature. My file has two attributes, color (cor) and size (tamanho), but it is only importing the color variations the right way. For the size variations it is only importing the first value. The Woocommerce import log says it couldn’t import those products because there was already another product with the same SKU. This is the import file: https://www.vilasport.pt/wp-content/uploads/2020/10/Importac?a?o-de-teste-parents-and-childs-7.csv.
Any help, please?