So let's look at a few misconceptions. Often in understanding International Business you have to unlearn many things first, much of the information out there particularly is inaccurate or worse dangerously ambiguous.
The parties had negotiated in detail the clauses which comprised the terms as amended and as such the clauses had been essentially agreed and varied. This case highlights the dangers inherent in starting work before a formal written contract is in place and such letters of intent should always be treated with caution. However, if a letter of intent is inevitable, this should: Clearly specify those contract terms that have been agreed and those that remain outstanding, so that there is no uncertainty over what has or has not been agreed between the parties; and