You can now work with others who are on versions of Inventor that are earlier or later than the version you are working in. This workflow is called AnyCAD for Inventor.
Install Inventor 2017.4 to reference future (newer) versions of Inventor part and assembly files in an earlier version of Inventor. Once installed, you can reference an Inventor 2018 part file in Inventor 2017.
Install Inventor 2017.4 to reference an Inventor 2018 part file in Inventor 2017. Inventor 2017.4 can be downloaded via the Autodesk desktop app or from https://manage.autodesk.com.
Use the Open, Place, or Derive command to create a reference to a future version of an Inventor part or assembly file.
Migration: If you open and save the file in a newer version of Inventor (or use Task Scheduler to migrate files with references to future versions) the future version references are migrated to standard Inventor Place and Derive relationships.
For more information, see About AnyCAD for Inventor.