Proper way to reuse MetaHuman eye.

Hi,

I’m moving a project over from Marmoset to Unreal and am wanting to reuse the eye from the Ada MetaHuman model.
I exported Ada’s mesh, brought it into Maya, separated the eye and exported it with my model, re applied the MI_EyeRefractive_Inst_L material however the rendering, even if in the MataHumanSample scene is different. Am I missing something?
I’m very new to Unreal so any help would be greatly appreciated. Thank you!