I would be very curious to know if they have turned other offers down. I am sure they have as it would seem silly for the likes of Amnesia not to at least enquire with their team. I know Hi has more publicity than Amnesia these day's but surely for Afterlife as a brand they could get the same exposure to their core fan base at Amnesia as opposed to Hi?
Hi seems to put the people who like Afterlife off of going to the event, and in turn must make them think twice about attending their events elsewhere, it certainly did that to me after their first season at Hi. It was only recently faith has been restored and I've learnt Afterlife @ Hi is a weird anomaly.
Just seems weird to be marketing yourselves to people who don't really care and most likely won't attend Afterlife anywhere other than Ibiza.