Can MarketPress Import Variations and Excerpts?

I'm moving over from a different e-commerce solution, and I'm trying to set up an Etsy-like art store. The problem is, all of my products have variations (different print sizes) and excerpts. I tried adding a column to the CSV named "Variation Name" and "Excerpt" but no dice. I also tried using PHPAdmin to look at the database to see if I could do it manually that way, but was unable to find the product table.

I cannot seem to get these fields easily imported, and a thousand products is too many to input by hand.

Any suggestions?