In '08 I met a riding buddy who flew his bike from the US into Lisbon, Portugal. A DR650. From arriving to departing it took less than 2 hours and included taking the bike off the pallet, putting on the front wheel, reconnecting the battery and riding it away. There was enough fuel to get to a gas station.
Although he did all the paperwork as I waited I didn't see he had any difficulty. His blog is Ride Far | Mark Hammond
and I'm sure it'll be on it.
Hope this helps.
'Security is a product of one's own imagination, it does not exist in nature as a rule, life is either a daring adventure or nothing.'