I never really got past the importing stage in GNUcash. I want to categorize the payments into different accounts, depending on how the money was spent. But there is no easy way of doing it. Or doing it iteratively.
When you import all your new transactions are presented. You can click (or ctrl-click to choose several) and match them to an account of your choosing.
It also memorises what transactions go into what category, so after you categorise, say "PURCHASE LIDL" as Expenses.Groceries, it will automatically match future transactions with the same name to groceries as well.
