K2 to Content Migrator Joomla extension (by foobla) is for importing from K2 categories & K2 items into Content Articles categories & Content Articles items by pressing a button in Articles Manager page.
K2 itself has ability to import from standard Joomla Content Articles to K2 items but doesn't offer to import the other way (from Import from K2 to Content), this Joomla Importer extension is for doing that, import from k2 to Content, includes: categories & items.
