Hi Karen,
Rather than have an area that lists "undocumented features", I'd rather encourage our clients to let us know right away if an Adagio module does not behave the way they expect. Now sometimes, the behaviour will be right (just not what they expected), but other times they'll uncover an undocumented feature so that we can fix it.
For an example, see the post in the general forum about some items not being exported from Adagio Invoices. This uncovered a problem with the range of items that had never before been reported, and the user had put up with the bug for 3 years!
Just let us know when there's a problem. We'll try and fix it as soon as we can.
Thanks for using Adagio!