Thanks all for the replies. I finally discovered that flight details show up in a separate area below, pertaining to each month pulled up in the summary, e.g. change as the month's summary selection is being changed.
I've been so much used to a system where you can specify a date period and then pull up all activity for it, that I kept looking for that method.
Been catching up with several accounts yesterday and just got lost in the miles & point jungle!
Going only six months back is really insufficient, unless there is another way to pull up AAdvantage activity online I am not aware of. Still, LH is even worse with only 3 months of history.
In this case UA MP wins, where you can pull up any time period for up to 2 years, currently back to 1/1/09!