Data Import Wizard pages can slightly differ due to the product you have been using.
To cancel mapping of all the columns, click Clear Mappings on the toolbar. To restore it, click Fill Mapping.
Click Finish to finish the import and close the wizard.
You can save the import settings as a template for future uses. Click the Save Template button on any wizard page to save the selected settings. Next time you should only select a template and specify a location of the Source data - all the settings will be already set. For more information, go to Saving and Using Templates topic.