@Giedrius: Thank you so much for the help. In the end, I found it worked to make the changes to /usr/local/patchbox-modules/orac/amidiauto.conf instead of /etc/amidiauto.conf.
And I believe both lines were necessary to have the ability to do midi mapping to both the TouchOSC device as well as to my midi controller that was connected via USB.
I may have gotten confused in the permutations, but I can confirm that both settings together do at least work, even if they are redundant.
Thanks again for your help!