Thread:Extension talk:Translate/Apply Translate extension to imported pages/reply

There is no solution that I'm aware of: until you make a local edit and mark the page for translation, the Translate extension won't recognise the page. Why did you choose XML import, what are you trying to do? If you just need a read only copy, you may want to try Manual:$wgEnableScaryTranscluding instead; there are many other possibilities though.