There is also some information tucked away in the new 2020 features video that may be helpful since they made enhancements to the ACW. You can click on the various headings of the video by using the links PG posted in the third message in this thread:
Both the older and the 2018 version of ACW are available in BIAB.
If you use the Audio Chord Wizard icon or use "Audio | Audio Chord Wizard (Audio Edit), you will be taken to ACW 2018.
If you use "File | Open Special | Launce Audio Chord Wizard" or "Audio | Launch Audio Chord Wizard" those will open the audio file using the old version of ACW.