Right now you cannot directly import RS2 files into RS3.
- You can import an RS2 file into RS3 1.0, save it, then import that RS3 1.0 file into RS3 2.0.
- You can export the polylines from your RS2 file into a dxf, then import that into RS3 2.0. You can also import the material and support property data from your RS2 file directly into RS3 2.0.
In general you can import 2D geometry into RS3 2.0. These can then be extruded, swept, lofted, or revolved, to create 3D surfaces and volumes.