In the interface for creating a new survey, there is an option 'Import text', through which you can import question and answer text e.g. from Word to 1KA. See the manual for more detailed instructions.
If you wish to download the questionnaire from an 1KA application on your computer, virtual domain or 1ka.arnes.si to the online version of 1KA or vice versa, then you can export it to your computer using the 'Questionnaire archive' tab and transfer it via the interface for creating a new survey to any 1KA installation. More about this is available here.
The Import text and the Questionnaire archive functionalities are only available to users of the 2KA and 3KA private packages.