Never mind my last comment, the old treasure was still on the raid map, yet to be claimed, once I had let the cool-down timer reset and played it again.
Looks like after you beat a raid and have loot waiting if you have your guy picking up loot on one raid map heading towards it but start another raid map before he gets the item he wont pick up what was on the map you just beat. Has anyone else has this problem?
 "Idle Raiders"){kind=icon}