The plugin dashboard shows the list of imports with the pagination and filter options. You can see more details about the import by clicking the Load feed link..

To minimize the number of API requests, we implemented a caching system for results and it’s cleared whenever you change the import options. You can clear the cache by clicking on the Clear Cache link on list items. When you remove an import, the list of posts you imported are also going to be removed from WordPress. Make sure that you don’t remove any existing data.