为什么导入的sat模型无法正常显示

请教大家一个问题，我在CST中导入了一个sat文件模型，在MWS工作室算完后，保存，关闭文件。在重新打开这个CST文档后却发现我的sat模型不见了，无法正常显示！重新计算了几次都不行，安装了两个版本也都是这种情况。请问大家有遇到这种情况的吗?

没有，回答完毕。
参考CST MWS帮助文件《CAD Data Import and Export Overview》和《Import SAT File》。
Copy file to project
In general, the option 'Copy file to project' should be activated for the import.
When 'Copy file to project' is activated, the original import file will be copied to the Model/3D sub folder of the project. For the import, the copied file will be converted to a sat file, and will be saved to the Model/3D sub folder of the project, too. During a rebuild, the sat file is usually read except when the copied import file in the Model/3D sub folder is newer.
When 'Copy file to project' is not activated, only the converted sat file will be saved to the project. During a rebuild, the sat file is usually read except when a newer file of the import exists.
This option is available for the following imports: SAT, STL, IGES, VDAFS, STEP, Autodesk Inventor, PROE (Part), CATIA4, CATIA5 (Catpart), Nastran, Microstripes, Conventor, Mecadtron, HFSS, DXF, GDSII, Gerber.
Please note: For CATIA5 Catproduct files and ProE Assembly files this option is always deactivated, and these imports behave like explained above.  

建议你检查下单位设置
比如设置成了Hz,再设置个m单位,弄个open add space边界,就可能缩的很小看不到