The cart optimizer now has global and per-card exclusions for printings.

At the individual card level, you can exclude any particular printings you wish.

At the global level, you can exclude Universes Beyond printings overall, and by default the cart optimizer excludes pre-order printings overall (but you can toggle that).

Exclude a printing for one card

If you want to avoid some particular printings for cards, the cart optimizer now uses a familiar interface to choose them (similar to what you use to modify printings in the cart on Mana Pool).

Stoneforge Mystic's Special Guests printing is greyed out and excluded; Worldwake and Grand Prix Promo versions remain selectable
One of three Stoneforge Mystic printings is excluded.

Set cart-wide exclusions

From the Cart Optimizer, you can also open Exclude Sets to skip Universes Beyond cards and pre-order sets (the pre-order filter is on by default). These filters apply only to reprints, so they will work how you expect.

Cart optimizer settings with Exclude Universes Beyond and Exclude Pre-Order enabled
Use these options to filter printings across the cart.