Material IDs from cinema 4d to ue4

I have imported an animated asset from c4d to unreal engine and even though the c4d model has material IDs set up it only imports into unreal with 1 material slot, any help on how to import properly from c4d to unreal so I can use multiple material slots would be appreciatted, cheers.



Solved it, I had to remove the polygon ids and re add them manually.