Asset Based Ordering importing .csv file of SKUs

Summary:

Does anyone know if it is possible to import a .csv file containing SKUs directly into the Line Item Grid and have ABO add or update those items without having to use the configurator? My client may has a business case where there can 100+ new subscriptions to create in the same order. They would like to either add the SKUs directly into the LIG with the duration and quantity, or create a .csv file for importing directly into the LIG. I thought I had seen a reference to this ability in some documentation, but I'll be darned if