Retarget fail

Hello!

I has the pistol animset pro from kubold with the old blue guy. I want to retarget pistol poses to my character from mixamo fuse. The two character have the same pose, and with retarget manager I remapped them, ans when retargeting even the skeletons are compatible. But when the retargating is done, the character is distorted. I tried everithing what I can think for, but no result. Anyone knows how to retarget correctly? thanks for any help!

I had the same exact issue when retargeting from the epic skeleton to my custom skeleton. I was able to fix it when I followed the steps in the following video starting at 18:30.