Game Mechanics: Should be able to sell an entire bag's contents by clicking bag and then Sell button

[tristantio]

When selling to a merchant, you can no longer sell items that are inside a container by having the container selected and clicking the sell button. The merchant will tell you that you need to empty the container before the merchant will buy it. This should prevent folks from accidentally selling items that they did not know were in those containers.

http://www.tski.co.jp/baldio/patch/20010508.html