Here is how I duplicated your steps.

<1: Use a BB session with an Audio track or create one.>

I began with a new BB session and used F3 open command to open a WAV file onto the audio channel. There was no chord progression and default MIDI style ZZJAZZ.sty was the style.

<2: Convert Audio track to mp3 (I do this outside BiaB), and replace the Wav Audio file,(delete wav file after conversion).>

I converted the audio track file to MP3 using the drop box MP3 grid in BIAB. I exported the MP3 to my desktop and erased the wav file from the Audio Track and closed BB.

<3: Open the session with the mp3 audio with BB 2022, it will convert the audio to wav but it will not create a wav file with the same name at the song directory.>

I opened a new BB session (no SGU file has been saved to this point in the process.) I used the File |Open audio MP3 command to load the saved MP3 from my desktop onto the Audio Track.

<4. Create a new folder and "save as" the session as a new file, it save only the .mgu file and no audio at all.>

I created a folder (New Folder) on my desktop and did a "save as" for the current section as a new file "Untitled Song" in the New Folder and the BB project was saved as Untitled Song.SGU and a wav file named Untitled Song.wav was also saved.


< 5: Open the Song/session with the mp3 with BB 2020, and it will create automatically a wav file in the song directory (folder), for use in the next time that you will open the song.>

I didn't do this step.

BIAB 2025:RB 2025, Latest builds: Dell Optiplex 7040 Desktop; Windows-10-64 bit, Intel Core i7-6700 3.4GHz CPU and 16 GB Ram Memory.