WARNING - Do not book with Flight Network (bookwithmatrix) !!!
Specified S class (higher than the lower, T, fare) for a ticket to earn miles and Flight Network generated the e-ticket. Flight Network receipts don't show the booking inventory. I now know why -- they check the city pairs to see if the fares decrease after purchase so that they can pocket the difference. Upon check-in, I noticed that I was not in my originally ticketed S class but instead had a new ticket number, in T class, which wouldn't earn me any miles. Spoke with the airline as to why the original ticket was cancelled and the new ticket issued--they said the travel agent did it. No notice to me. Nothing!
Now on hold with Flight Network (30 min and counting) to see how they're going to get me back into the fare that I paid for.
DO NOT USE THESE GUYS AS PART OF BOOK WITH MATRIX!!!