Good day! :)
Small question about HDRI and its mapping in keyshot: recently i figured out that when you using same HDRI in keyshot and 3D's max you wont get same result even when using same camera for render. Reflections flipped horizontally and offset in both axes and I can't match them perfectly even manually (scene exported with keyshot plugin). So the question is how to match them?
I'm not sure I have a solution for you... but the question is why you're trying to match them? What is the overall result you're trying to achieve? There may be another way to achieve it.