Add an old version of your VST-plugin that supports automigration (tested with Kontakt 7)
Save the project and close cubase
Remove all but the newest version (tested with Kontakt8.vst3) of the respective plugin from the VST plugin folders (paths can be determined from looking at Studio->VST Plugins Manager)
Restart cubase
Check under Studio->VST Plugins Manager that only the newest version of the plugin (Kontakt 8) shows up
Reload the project
Cubase complains that the plugin is missing. The instance is not migrated
Expected behavior:
Cubase should auto-migrate the VST instance stored within the project (Kontakt 7) to it`s newer available version (Kontakt 8). The steps above work in Cubase 13.0.51.
sample problem here with Cubase 14.0.20. (win)
nuendo 13 does it well (same project tested) and newest Cubase updates fail to do proper plugin migration … please fix