I also found that post, but there's no info on how to use in CC4. I'm familiar with the general idea of these packed textures but I've never "unpacked" one and google isn't being helpful. In Unreal, for example, you just plug in the different color slots into the material output to use it, but CC4 doesn't have a system like that. 

The only thing I can think of right now besides figuring out how to separate the texture is to put the texture in each of the slots and change it's color? Messing around with it, it does change the textures but I'm not sure if this is the "correct" way to use such a texture in CC4.

I had to look up what it actually is, but here is an explanation:

https://forum.reallusion.com/457280/What-does-the-ORM-Map-Do.

For CC4 you will have to split the file into individual Ambient Occlusion (Red), Roughness (Green), and Metallic (Blue) textures.

You still need to have a Base texture as well to get a complete PBR material.

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I got some clothes that came with an ORM texture. How do I use this in CC4? CC4 has sperate slots for each texture. Do I need to separate the channels somehow in a photo editor? I quick look around and I didn't find anything but I figured I'd ask before I spent too much time on it.