I need to create an application, that exports all 3d views of the Revit model to separate rvt file for each model.Is it possible to do with Design Automation API?
Yes, absolutely. Say the original model is named A with 3D views V1, V2, ... Vn. Open A. Delete all views except V1. Save as A1. Close A1. Open A. Delete all views except V2. Save as A2. And so on. That can be done in DA4R.