nononononono they don't show up under the bin in the 'take to depot' screen (which is good, you WANT them to carry the bin to the depot), but they do show up in the 'select what you want the elves to cart of the map for you' screen at the depot.
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Only problem is, you can't select just the contents of a bin... It's either select the bin and all it's contents or deselect the bin and all it's contents.
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That said, if you select the individual items IN the bin, you can move them one by one.
Not working. I have literally TONS of food and wine I would like to trade, but when I do a search and type (plump) for example, the only plump helmet items that show up are the ones not stored in the barrel, or the barrels themselves if they happen to contain plump helmets. I have yet to find a way to get them out and bring them to the depot.
This is important mostly with food because I do not want to sell the barrels. I want to sell the STUFF and then re-use the barrels.
So if you have the process for getting the stuff out of the barrel and to the trading post, that would be great. I thought I had it figured out once, as I took the stuff I wanted out of my food stockpile permissions, then created a stockpile close to the trading post WITH the same permissions, THEN went and had it take from the previous food stockpiles. Worked like a charm the one time. When I tried to do the same to get my bone crossbows over to the trading post without dragging along the good ones I wanted my crossbowdwarves to use, no dice.
Finecky -- maybe even buggy. Just updated to d16. Or else I am missing something easy.