Meats at my Trading Post disappear when the Resource Merchant arrives and goods are auto purchased. They are NOT spent on the arriving goods. I am using no mods.
Streamable video ExampleDetails:
* Trading Posts Stocked with ~5,000 Venison, Mutton or Beef and 1,000 Firewood.
* Trading Posts are set to purchase 9,000 logs, and sometimes Food, Stone and Iron.
* Resource Merchants are set to Orders on Logs, and sometimes Iron and Stone.
* General Goods set to Logs, and Food.
The Trading Posts behave as expected when General Goods or Food Merchants arrive. The appropriate amount of goods are purchased and the appropriate amount of goods are removed from my Trading Posts.
The Trading Posts do NOT behave as expected solely with Resource Merchants.
Google Drive of Save GameThis save is paused right before two traders arrive. It may take you several loads to get a Resource Merchant. The behavior exists as described every time at these two, and other, Trading Posts.