KEPServerEX 6.7.1054.0 Upgrade Advise

I currently have a KEPServerEX 6.7.1054.0 instance running on a production server. The original application owner is no longer with the company, and unfortunately, the installer for this exact version is not available in our internal software repository.

I do not see a way to obtain this exact legacy installer from PTC, so I am evaluating whether it is safe to proceed using a newer KEPServerEX installer within the 6.x major version.

Before moving forward, I would like to confirm a few things to minimize risk in a production environment:

1. License Compatibility
   Is licensing for KEPServerEX 6.7 generally forward-compatible within newer 6.x releases (e.g., 6.14 or later)?

   • Specifically, will existing licenses (including licensed modules) remain valid after an in-place upgrade?

2. Upgrade Risk / Downtime Considerations
   Has anyone performed an in-place upgrade from 6.7 to a newer 6.x version in production?

   • Were there any licensing reactivation issues or unexpected service interruptions?

3. Module Availability
   If a module is licensed in the existing installation, will upgrading to a newer 6.x version carry over these modules automatically, or is a separate installation step required?

4. Best Practice
   In this situation, is it recommended to:

   • Perform an in-place upgrade using the latest 6.x installer, or
   • Attempt to source the exact 6.7 installer before making any changes?

My primary concern is avoiding extended downtime due to licensing or activation issues during the upgrade process.

Any guidance or lessons learned would be greatly appreciated.