My bad. A9G indeed. Don't get me wrong, I'm not ruling out programmer error by any means. But I'm 99.9% sure there is something else at play here. I have been programming URC remotes with Sony TVs for over 15 years.

I know in the Elan database for Sony TVs, it has 4 alternate codes for the HDMI input selections. Maybe some that are not in ANY of the URC database entries. Just odd that it didn't work on 2 of the 3 at first, and then the apparent fix for 1 of the 2 did not fix the other.

I won't be back at that project until October so I will figure it out and report.