I do this with all Apple TV 4K. What is a PITA, although it still has seemed to work, is transferring those URC commands into Control4. They learned ok between the URC remote and the C4 processor. But when I tried to learn those into the Apple TV using the weird ass process, or so you call it, it did not like half of them very well. As in, when you press and hold the button you are trying to learn, the progress bar progresses to about half way, and then goes back to zero. However, if you press the button repeatedly, in quick succession, it will fill the progress bar, and the code will be learned "successfully".

The codes, once entered into C4, do work. But they seem a bit slow to respond compared to the URC remote natively. Luckily, I believe the IP control works ok on them, although I have not tried it. Been too scared. :P