We've resolved an issue causing pick list items to appear out of order on orders involving books with more than one Inventory Unit/UID for the same SKU.
The root cause was in how Lister determined a book's location for sorting purposes. Both the Location field under a product's Item Details and the pick list sort logic were referencing the first location a book was ever assigned to, rather than the current location of the specific unit that was actually sold. This was inconsistent with the pick list history view, which correctly displayed the unit's actual location.
What This Means for You
If you sell books that have multiple units sharing a SKU, you may have noticed pick list items showing up in an unexpected order. This is now corrected.
What You Should Do
No action is needed on your end. This fix is already live, so pick lists for orders meeting these conditions should sort correctly going forward.