Perhaps I asked too many questions at once, however I am taking a look at the multi-city option on aa.com and sorting "by schedule" as suggested in the wiki, to try and reflect an ITA matrix result.

However I have two specific queries:

- How do you get the system to show flights for the "next day" on the return leg (it complains if you change the date of "flight 6" to a day later than "flight 5", and if you leave the date the same it shows flights which seem to take off before the previous one has landed!

- Is it possible to input tickets with more than six sectors?

The BA multi-city tool appears to be similar. Many thanks.

EDIT: On the example dates I tried, the BA tool showed some of the flights with different times to the matrix, and priced up at about twice the price!