My dealer changed my A3 Sportback Bi-Xenon headlights for use in Europe using their VAG 5051 compter equipment. When it's in 'Europe' mode a warning comes up on the DIS so that you don't forget to have them changed back.
I assume that, as I've been using the same dealer for all my A3s over the past 10 years, they did not change anything for this service.