Inaccurate gig information reverting after edit

Edit Subject

This is an interesting one: if you take a look at the history for this event...
http://www.songkick.com/concerts/2398...
...you'll see that I've twice edited the show to remove bad data (the supporting acts are curiously listed as The Violatorsblues Controlcoconuts), but both times the data has reverted within the next day.

It looks like there may be a scheduled process checking gig data and reverting back to the stored "bad" version of the supporting acts? Regardless, it's a curious little bug.