How to change material order from Maya to Unreal?

I’m importing a skeletal mesh (FBX) from Maya to UE 4.16 that has two materials but the material order in UE4 needs to be switched. No matter what I do, reimporting the mesh leaves the material order the same, even if I change the materials in Maya. The skin## suffix also no longer works. I’ve looked up the official documentation but the instructions are unclear, how can I reimport a skeletal mesh with a different material order?