Workflow for Chaos Mesh to Static Mesh conversion
Go to Fracture Mode → under Utilities click “ToMesh”. Export and Reimport with UCX Collision your mesh (Batch Script in Phyton or BP Utilites for one click solution). Set Batch as Simple Collision. In Mesh Actor Settings set → Enable Physic Simulation == true. → Place your Meshes in Viewport and Press Alt+S → wait for simulation is done → go to Tools → Conert to Static Meshes. Fine.
I use this for fast LevelDesign.