How to separate it ? could be separated in Unity... on Humanoid Mesh import

It’s asset I bought from asset store, a FBX that stacked several models:
微信截图_20160917235200.png
After I import it into UE4, it’s all models combined together. The problem is that I don’t find a way to separate them again:



The skeleton looks normal:
2a01e10b2c1ce0de57a3589037304e59edb4e5de.png

As reference, when I import it into Unity, I get this:


Note there are several separate ones like “hunter_red” or “Knight_RED”
When I try to add it to the scene, at first it was combined together, but I can reserve just one of them by deleting all other ones:
f6934e42ff8f176b5fe3e6345830b2c9505deafd.png
微信截图_20160917235534.png

How can I get the effective result like in Unity? Please see the FBX in google drive if necessary: