We have an implemented site in Episerver 7 (soon to be updated to 7.1), and are about to implement the site in Russian and Arabic.
The translation agency has asked us if we can export the English content, have them translate, and then re-import back into CMS, but in the relvent new language.
Does EpiServer 7 support this, and if do what do I need to do? Would I have to edit the export file?
Look at Translations.com component, may be it helps.