CSI XRevit is a link that allows exchange Building Information Modeling (BIM) between Revit Structure 2016 and ETABS 2015 or later, SAP2000 Version 17 or greater, and SAFE 2014 or later. CSI XRevit supports true round-tripping, specifically - four different workflows of data interchange: 

• Exporting from Revit Structure to create a new ETABS / SAP2000 model.
• Exporting from Revit Structure to update an existing ETABS model.
• Importing from ETABS /SAP2000 to create a new Revit Structure model.
• Importing from ETABS to update an existing Revit Structure model.