Of course you can import and export everything for this plugin. Most importantly you can import all Full Plugin Demo Data just with a click of a button. Just go to Ess. Grid -> Import/Export and press on Import Full Demo Data (green button) and all the demo data of this plugin will be imported for you.
To import the ones included with the theme, just click on the import drop down, choose file (from essential imports folder that comes with the theme) and press read file.