Do royalties apply to marketplace 3D models used in other game engines?

Hello,

There are some paid 3D models that I have purchased from Marketplace that I would like to use within a different game engine (Unity3D). I have gone through the process of importing the 3D Models and textures into the other game engine, but before I continue, I would like to be 100% certain about royalties regarding 3D Models purchased from Marketplace. Does the 5% royalty apply to 3D models and textures purchased from the Marketplace? I know that content that says something along the lines of “This content is not permitted for use in non-Unreal Engine games.” can not be used, but I want to clarify for products (specifically 3D models and textures) that do no say that.

Thanks!