Moral of the story? If you're ever contemplating using a Letter of Intent in a business transaction, you had better watched out, it may not be as simple a matter as you might think. You better be very cautious, for it could result in unforeseen and unpredictable consequences!
Traders are better off NOT using documents like LOI, ICPO, FCO, etc. Even if and when they rarely are used in internal trades, on a restricted level within specific industries, they have no legal or customary basis in International Trade whatsoever. In fact the presence of many of these terms are considered to be signs of Advance Fee Fraud, by knowledgeable players and law enforcement.