Carol, I believe you've mentioned in the past that you have a PR702. I have a PR902 and I have been able to send out midi data from APC by setting the APC tracks to midi channels as Technicsplayer has suggested. There is a very easy way to do this on your PR702:
>Program Menu
>Midi
>Presets
>Presets/Page 2 (page 2 is for sending midi)
>Select 'With APC' (without APC=default)
>Select '>Ext. Sequencer'
>Select 'OK' and Exit
You can verify that the APC part numbers have all been re-assigned by checking under the same 'Midi' menu and selecting 'Part' instead of 'Presets'. Scroll down a couple pages in the 'Part' listing and you will find that the the APC parts have been automatically assigned to an output track (normally they are not assigned to any track). The unfortunate thing is that it is not possible to simply capture midi data from APC to a file on the Technics itself. You have to output it to an external sequencer to record it.
Rob