GPI sort cards by deck order?

How is it possible to have a Game Piece Inventory display cards sorted by the order they are in a deck?

Seems like it should be easy, can’t figure out how to do it.

Desired result: 3 folders, for 3 decks. The card backs shown in deck order in each folder.

EDIT: Ah, it’s numeric sort by label $DeckPosition$ isn’t it? I didn’t know that was an exposed property.