How Do I Trade Equipment?

I have 3 “Avionics” I wish to trade for a grade-4 CPU. The 3 trade goods in question are an LDS 1 and 2 LDS 2’s.

Unfortunately the Trade Manager does not seem to recognize that I have the required trade goods, and I’m guessing that’s because they’re in “Equipment” instead of “Cargo”.

How do I move the items over to “Cargo” so that I can trade them for a better CPU?

Alternatively, why does the Encylopedia list LDS drives under “Commodities / Electronics / Avionics” when they are in fact not eligible trade goods? Is it not reasonable for the player to assume that if a product is listed as a “Commodity” that it can therefore be traded?