Magmi: how to import categories from different columns

Question

I have a CSV with 2 columns for categories. 1 column contains the base category of the product and second column contains the sub-category of the product. If no sub is specified the product is considered to belong to the base category. Is there a way to instruct magmi and tell him that the categories should be created from 2 different columns and that column 1 is base category and column 2 sub-category ?

Answer 1

Indeed, its is perfectly possible through the Value Replacer plugin (from extra package)

see documentation here (there's even a category from multiple columns sample in simple syntax paragraph):