When you upgrade to Cinchy v5 on Kubernetes you are creating a separate instance. You will need to plan the migration of your database, and then follow the deployment installation guide.
2. Upgrading to v5 on IIS
If you want to install v5 on top of existing infrastructure, you will perform an in-place upgrade by following the instructions here: Upgrading Cinchy Versions - IIS.
If you want to stand up v5 as a separate instance (for example: a non-prod instance), then follow the instructions here: IIS Deployment Guide.
3. Compatibility Issues Between Versions
If you choose to upgrade to Cinchy v5 on PostgreSQL, please review the following features that are not currently available in that deployment.
These may be implemented in future versions of the platform.