Thanks for fast reply and updates. I noticed also that I can use F8, Ctrl+F8 and Alt+F8 concurrently with "Biab-track-injector-GUI-1003" script. That's absolutely fine. Based your great help and software I can now speed up my song writing process remarkable. It is much more convenient to carry out.

I have discussed with PG support why partial regeneration destroys all info from track but not that part which have been selected to regenerate if many styles have been used in song. They have asked me explain that many times more and more but I feel that PG still not understood what's is going on. Good medication for that is use "Import riff to track section" and change the process more on Reaper side.

Thank you very much of your help and have a great music!