So, I have looked into this further, and I have noticed that the Project\WindowsNoEditor\Engine\Content\Slate stays behind once it’s packaged, even when you use the UnrealPak to verify. With that being said, I have submitted a bug report to our Developers. I will update this post when UE-26771 has been fixed, or if there has been clarification provided that wasn’t included in our documentation.
Thanks!