How to configure an M-Audio Oxygen88 to control Nuendo 12

I’d like to know how to set up Nuendo 12 to see an M-Audio Oxygen 88 Keyboard Controller. I had it working in Nuendo 10 but when I upgraded to 12, the 88’s functionality went away. It’s been a couple of years since I first installed it so I don’t remember how I did it? Is there a config file embedded in Nuendo 10, which could be used to recover those settings for 12?
Since then, I’ve added a Behringer X-Touch control surface as the main controller but would like to control start/stop from the keyboard’s transport buttons and arming/disarming punch points, as well.
Thank you,