Static Mesh material elements don't export

When i export a mesh with 12 material elements and open up the exported mesh in a 3D Application or Import it back in UE4, there’s only like 1 or 2 material elements. I Don’t know what to do about this. Any help would be appreciated.

Besides that not being optimal at all. (id highly recommend against so many material elements since that would mean that mesh will be drawn 12 times… thats 12 drawcalls!)

You will need to apply a multisub (at least thats what its called in 3dsmax) to it, with the proper amount of sub-channels.
Then it should import properly.

But again, id highly suggest to find more optimal ways.

I Don’t have 3DS Max, so how can i do this in Maya?

you google “Multisub in maya”
Which I also just did: CGTalk | Muti/Sub-object texturing in Maya...how?
http://polycount.com/discussion/76633/multi-sub-object-maya

etc

Yeah i already seen that. it just tells me to select the faces and apply a new material wich seems unecessary because i already had different materials on the mesh. What i wanna know is why does it delete all of the material elements whenever i export a mesh