Yes, you can use the Guvnor built-in import/export functionality however it is often not the best option by far. Take a look at this blog I wrote (and watch the video linked in it!) to get some ideas about using the drools-ant task for jackrabbit migration that is much more powerful: http://surdilovic.wordpress.com/2011/03/25/using-drools-ant-to-migrateback-up-existing-jackrabbit-repositories/.
Hope this helps.