yes and Cataclysm
There is really no step by step guide, sometimes its easy, especially when the branch NVIDIA has is the same version of UE4 as the one your merging into, such as it was time around for most of them, other times its much more challenging, like upgrading WaveWorks from 4.9.2 to 4.12.5. As a lot of rendering changes were made, so had to modify a lot of code to make it work again.