Importing simple rigged mesh made in Blender doesn't provide a correct result in the engine.

Hi!

I’ve made a very simple mesh with an extremely simple skeleton to have basic ragdoll available on it. Here’s how it looks in Blender:

But when I import it in Unreal, the PhysicsAsset ends-up looking like this:

I’ve made sure my weightpaint was OK

And tried multiple times with different configurations but legs are never working independently, they stay straightly bound to the main body for a reason I ignore.

Does someone have any idea why ?

Thank you very much!