Before 7.0 the 'biggest' lockboxes produced items you could turn into 'crafting-useful' Jawa scrap/junk.

 

Now however they produce a bag which seems to have currency-related items inside for level 80 - but if your character who was opening the lockbox is not level 80 itself, all these items form the bag are all lost!(?)

 

That's really the intended behaviour!? - If so, why not assign a level 80 requirement to the lockbox itself?

 

 

As far as discovered, these currency items we are intended to get often/only(?) allow to buy items/gear with a level 80 requirement, but this cannot be the reason why not to move the currency items from the bag (found in the lockbox) on/into your currency tab (so you can use your saving later when your character is level 80).

With 7.1 update, level 80 characters no longer get currency bags which was THE MOST useful part of these missions. Who thought addressing a single complain by screwing up everyone else was a good idea?