Determine whether Inventor, AutoCAD, and Revit files are opened by the latest version, the last run version, or the version of the CAD Application that saved the file.
For example, if AutoCAD 2019 and AutoCAD 2020 are both installed on a machine, and you want files that were saved in AutoCAD 2019 to always open with AutoCAD 2020, you can configure Vault to always launch AutoCAD 2020 for all .dwg and .dxf files.
Vault supports 2018, 2019 and 2020 versions of CAD applications.

Configure Open File Behaviors
Inventor:
AutoCAD, ACM , ACE C3D