Skeleton Swapper will turn your UE4 skeletal mesh into UE5 or UEFN skeletal mesh in one click.
https://www.fab.com/listings/039a7607...
This means that you will have the new skeleton that is 100% compatible with new Unreal Engine 5 standards. (Having 5 spine bones 2 neck bones and 2 twist bones on arms and legs) This plugin will transfer skinning weights accordingly leaving aside rerigging and reskinning of your characters.
Also Skeleton swapper will let you convert your existing UE4 skeleton based animations to new UE5 or UEFN Skeleton animations (watch part 2), which will let you keep all of your animation montages in your project untouched and fully working. Which means that you can transfer your whole project to a new Ue5 or UEFN skeleton in minutes without any retargeting hassle, and then use the free UEFN 500 animations sample directly with your characters.
To use:
select your mesh or animations & right click
Select Skeleton Swapper and Assign new skeleton
IMPORTANT: Open UEFN skeleton and set retargeting options to:
Root to Animation
Pelvis to Animation Scaled
All other bones to Skeleton
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Skeleton Swapper for animations also comes with Swap & Retarget option (watch part3) which lets you select multiple animations retarget and swap them without creating new copies. (You will need to prepare retargeting asset for it)