Import Iges into SolidWorks

Hello everyone.....

I have an iges file with some levels or layes on it
When import into sw I have check the "show iges level"
The surfaces grouped correctly base on the level
But the curves not grouped....

Is there any way so then the curves also grouped ?
My customer said that the surfaces & curves level groupedcoorectly in catia.
How to do that in SW ?

Please note that the iges file contains surfaces & curves

Thanks !!!SolidworksImport export