The FBX contains about 200 blendshapes and when imported to UE4 about 20 blendshapes could not be found in morphtargets. And everytime imported lost the same 20 blendshape.
I had tested in 4.23 and 4.24 and got the same result. Also had tested in Unity and there was no problem.
Is there some requirement for the blendshapes imported to UE4？