When you rename an AU, then long press and replace, I think it should keep the renamed title.

My reasoning: I have a template with Drums A, Drums B, Bass A, Bass B, Synth A… etc.

The midi and audio colours that these are hooked up to are named the same.

I use these as placeholders which I then replace with the apps I want for that session. When replacing the one in the Bass A slot for instance, it’d be better if the replacement was still called Bass A.