A licensee pointed out that when importing a Blend Shape animation for morphing that was made at 60fps in Maya, the Editor animation viewer doesn't properly show 60 fps. However, after adding some transform keys (pos, rot), it properly shows as 60.
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I mentioned this to Lina and she said we're probably only looking at position, rotation and not looking for blendspace keys.
The attached project shows animations imported with blendspace animation only and a version with blendpace + transform keys. You can see they display differently i the animation editor.
The zip file also includes the Maya files and exported FBXs that the licensee used to test
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-27706 in the post.