ansys模型导入abaqus出现警告？

ansys划分网格后的模型导入abaqus时为什么经常出现这些警告呢？

WARNING: Empty part PART-1. This occurred while reading keyword options within part definition.
WARNING: Part instance PART-1-1 references an empty part. A new part named PART-1-1 will be created from the mesh data in part instance PART-1-1.
WARNING: Empty part instance PART-1-1. This occurred while processing part PART-1. Neither the original part nor the part instance PART-1-1 contain mesh data.