Greetings.
With the plugin setup the way it was, this was not something that was previously possible. However, I hadn't previously considered that this could be something someone would be looking for, and see now how useful it would be in a specific case such as your own.
I have updated the plugin to v1.60 which adds a plugin parameter to disable optimization specifically on subclass change. Let me know if you have any issues with it.
Thanks,
-Ramza