Ok, I managed to get it to work. It was kind of kludgey but I was able to save a config using the other denon's button and pull the pronto code into the manual "AVR-X6400H" config.
Why can I only assign a command to a max of 3 buttons. If i created a config with 7 different names for same pronto code I could essentially assign the same button 21 times. Why not just let me assign it an absurdly high number of times like 10 or 15?
Is there any plans to make the Remote Programming software open source? I peeped through the github and didn't see it.
This has been an incredible relief overall. This certainly has the promise to become as good as my beloved Harmony and is 80000x better than that absolute dogwater SofaBaton heap of garbage. Thanks for creating this product. I feel like if you've got amazon fulfillment, may as well have it listed on amazon as well? Would certainly get more eyeballs on it and vs the competition on there it's miles ahead.