ChaosPhysicalMaterial vs PhysicalMaterial in UE5

Since UE5 is switching to the Chaos physics system, I would have thought we would want to create ChaosPhysicalMaterials and not PhysicalMaterials. But when I add a ChaosPhysicalMaterial to my content and then go to a material, it won’t appear in the PhysicalMaterial drop down. Only PhysicalMaterials appear. It does look like PhysicalMaterial has been updated to include/use the params of the ChaosPhysicalMaterial so maybe instead of creating ChaosPhysicalMaterials we are just updating our existing PhysicalMaterials? Anyone have any insight into this issue?