I guess the traders love my colony because they never leave even after new traders come, I can still trade with the new arriving traders, the problem is that even though the old traders goods are still listed as trade goods, the trading depot does not recognize them as being there for trade and as I have a total of 14 traders coming to my colony each time, it is kind of hard to know what can be traded or not. The photo shows my problem as you can see the old traders are the ones just standing around and their "stuff" is still on the floor of my trade depot while the new traders are just arriving with their goods in their arms. So now I have a total of 28 traders at my depot just hanging out. Is anyone else having this type of problem? Here is my save if you want to check this out.