Here's a link to the paper. They've changed it a bit, and I'm not seeing the bins of corms on there, but you can see that they not only clean the corm completelt of leaf and root, but they also devide them before planting into grow-out beds (pre-field).
Manual Técnico para la Propagación de Musáceas Revista Digital CENIAP Centro Nacional de Investigaciones Agropecuarias de Venezuela