UE4 Mannequin animations are not exporting/importing correctly into Maya. The right hand is bulkier and the left shoulder is dislocated.
This was reported and tested in 4.23.1 (CL-9631420). this was reproduced in 4.24.3 (CL-11590370), 4.25 Preview 7 (CL-12759524), and Main 4.26 (CL-12945139)
Results: Wrong Skin Weight on Right Hand and Left Shoulder
Expected: FBX imports as it was in UE4
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-92285 in the post.