Moving cards between decks

Short of actual collection containers, which is a (hopefully) soon to be implemented feature, is there a way to move cards in a "deck" to another "deck"? Doing some inventory organization and I'd like to move a good number of specific items between two different locations.

Really though, I am in dire need of having a method to be able to truly sort my inventory into containers in which they are stored. Decks just aren't cutting it.