#152 Map import using another filed (not sku)

[Giuseppe]

Hello!
We have an ecommerce and we use magmi to update product info (of course).
Magmi uses sku to map product, but the skus of configurable and its simple products are different, while the ref_code we use is the same for configurable and its simple products.
So, I am wondering if it's possible to map import by using the ref_code instead of sku
Thank you!