Do you think this now also?
because there is nothing loaded before you “unfreez”.
The Routing of the “Plugins” by exporting to a Cubase Part has to be re-memberd.
Saved as Cubase Part only audio is used…
When you want to “unfreez” the CubasePart, Cubase has to re-do the old routing in the new .cpr.
(would sum the whole CubasePart on a Gropue-Channel (aka “freez Audio” Out) and route this to master.)
I think the Problem now is that, there is no CB internal solution to route Midi-Tracks to Automation, and so Midi-Ports are used, and i think them to automatically reconnect (to external SW) will be impossible: