You can certainly use BIAB to do what you want. It is great for transcribing and then transposing melodies.

It sounds like you must be entering the notation in the wrong track. Use only the Melody track or the Soloist track. All other tracks get regenerated each time you press Play, or each time you reload the song (unless you freeze the track, but I don't recommend that option for what you are doing). Make sure, when you go into Notation Edit Mode, the box marked M or S (the second one) is used in the string of letters: BDPGS(trings)MS(oloist). The program defaults to M.

And do not assign a Real Track to any track onto which you want to write your own notation; it must remain a MIDI track.

If you are doing all this correctly and still lose your work, write back and give the specific steps you are following.

I recommend you place your melody on the Melody track, and then you can use the program to generate harmony for the Soloist track. Depending on the genre you are looking for, something like 74 Jazz Messengers makes a very cool harmony for several horns.

BIAB 2025 Win Audiophile. Software: Studio One 7 Pro, Swam horns, Acoustica-7, Notion 6, Song Master Pro, Win 11 Home. Hardware: Intel i9, 32 Gb; Roland Integra-7, Presonus 192 & Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors.