FYI
I recently installed the latest upgrade to Adobe Encoder version 12.1 and realized immediately many of my codec and settings went away. Particularly the HAP settings. I tried reinstalling the HAP Encoder with no change. I downgraded to version 12 and all the codecs returned.
I think this is the frustration with Adobe updates. They can destroy your productivity with a press of a button.
I thought it would be good to let people know.