Yesterday I was running mythics with my guild. A rogue in my group received a 340 Azurite Shoulders and Helm. He had no use for them since the traits weren't better than what he had and he already was wearing a 340 shoulder and helm. However, the shoulder and helm he received were automatically soulbound, he could not trade them to me.
Why is azurite gear designed like this? If you already have a piece of gear that is your highest level, you should be allowed to trade equivalent item level azurite gear.