UE5 missing body parts after the bake

hi guys, I have a problem for which I cannot find a solution online, maybe you can help me.
When I bake the animation of my metahumans, parts of the body of the metahumans disappear, can you tell me what I’m doing wrong? I noticed that in the rigging tool I don’t have the possibility to choose the Bp as I see in the tutorials

is it possible that no one can give me an answer like this?