Hi Colin,
I’m not quite clear how you are trying to save just the “skeleton” part of the skeletal mesh. If I understand you correctly, you are trying to save out just the joints, which is not possible.
The term “skeleton” is misleading as in UE4, the “skeleton” is not the network of joints that you see but instead a hierarchy/list that assigns transforms to the bones (where rotations of bones is controlled by the animation) -Here’s a Twitch stream where one of our lead animation developers, Laurent Delayen, explains this concept more eloquently:
Unreal Engine Support: Runtime Animation Retargeting - Live from Epic HQ
-about the 12.5 minute mark for this specific topic
So, if I understand you correctly, you’ll likely want to retarget one skeletal mesh to the other, or export the entire skeletal mesh, detach the skin from the joints and reskin another mesh to those joints. If I am not understanding you correctly, please describe in greater detail what you are ultimately trying to accomplish and I’ll likely be able to help you get there or find another way to achieve the same thing.
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