There are lots of bugs in GOF 2.0 and 2.5 and I normally just leave them as-is, because I have no intention of fixing the mess that was left behind for those two versions (GOF 1.2 was more complete and fewer bugs, BTW); but apparently some people still prefer them so I did port them as they stood in the state the modders left them at their latest downloads. However, in this case there appears to be no recourse for a player to see the trader inventory at all, so I fixed it (also the ship cargo default problem) and it is uploading to Itch right now.