Thanks José for your help,
We finally understood that this problem was due to the fact that the particles at the bottom of the SkinnedCloth were trying to take the original position of the mesh without blendshapes.
We solved this problem by baking a new mesh from the original SkinnedMesh with the blueprints applied. And then we assigned this baked mesh as the input mesh for a new blueprint. And then we generated the new blueprint. After that we copy the particle groups.
Best regards!
We finally understood that this problem was due to the fact that the particles at the bottom of the SkinnedCloth were trying to take the original position of the mesh without blendshapes.
We solved this problem by baking a new mesh from the original SkinnedMesh with the blueprints applied. And then we assigned this baked mesh as the input mesh for a new blueprint. And then we generated the new blueprint. After that we copy the particle groups.
Best regards!