Hello guys! Sorry for any typos and minor inaccuracies in the description of the problem. English is not my native language. But I will try to do my best to describe the essence of the problem 
I successfully created a simple character in Adobe Fuse and created a simple skeleton using Mixamo.
Next, I set the desired matches to the bones of a standard UE4 dummy using Retarget Manager. Put the bones of the UE4 dummy in the desired position (T). I took standard ue4 animations and retargeted them.
With standard animations, everything is generally good - they work fine. Walking, waiting, running, etc. work normally. But!
I moved the attack animation from Paragon: Graystone and retargeted it to a standard dummy. Everything works perfectly - the animation works as it should, but as soon as I try to transfer this animation to my created character, his hands start to hang out like jelly.
So it looks like this:
About 5 hours I tried to figure out what was wrong and could not do it. I don’t have much experience in modeling to create a skeleton from scratch, so I thought maybe I made a mistake somewhere.
Maybe my imported character is missing some bones?
Or maybe it was necessary to put some check mark?
I really hope for your help!
