Improvements

IM - 4774: Set the requires_ship_weight flag to true for McKesson module.

IM- 4549: Added the functionality to convert cases to eaches for the retailer Natural Grocers.

Fixes

IM - 4726: Removed old calls to get the product ID that were no longer used when sending orders to 3PL.

IM - 3969: Set inventory level to 0 for any items SmartTurn does not provide inventory levels for.