I have some more info on this issue and a possible explanation of what's happening. After I entered a Dm chord into bar 240, reset the view to the beginning of the song, and then had RB re-generate the entire song from scratch, RB moved the "Play" start position to the beginning of bar 241 immediately before it began to generate the drum track (as it had done before). But I also noticed that RB was generating every other instrument track in two stages. The first stage was from bar 1 to bar 240, and the second stage was from bar 241 to the end of the song (bar 327). However, RB didn't do this for the drum track (as far as I could tell). So, does this mean that RB can only generate 240 bars at a time of each instrument in an arrangement? If so, why?
BiaB 2020 Win UltraPAK Build 713, RB 2020, Windows 10 Pro 64-bit (dual boot with Win 7 64-bit), Intel Q9650 3 GHz, 8 GB RAM, 500 GB SSD (boot) & 2 TB HDD, Tracktion 6 & 7 (freebies), Cakewalk, Audacity, MuseScore 2.1 & 3.4, Synthesizer V