Hey errybawdy.
I’ve built this mechanical skeleton around the bones of the SK_Mannequin from UE4 and as I import the skinned meshes some of them group up as one skeletal mesh while others seperate into their own parts. Here is what it looked like after I imported it, with no errors reported by the way:
So all the pieces are there and they are all working, but separating upon import.
Any ideas folks?
Thanks all 
-Jordan