a lonnnnnnnng time ago. when servers were all laggy and crap. when they were rolling back and shiz. 2 years ago? i traded a shard 8 a dread sheld+7 and a buncha gb's for a excep shard+7 reb. and the next day, it was rolled back. i had a few ss's of it ingame and on KoK. i sent it in. nothing happened through CS tickets. went through BBB. a week or 2 later. BLAM! it was back xD
i dont think it works every time but gogo BBB if something valuable goes missing.