Dave
As per your suggestion I unchecked "Force Track to Simple Arrangement" for all tracks then saved the file.
Today when I open the file, tracks have reverted to being checked.
Is this a global setting within BIAB or have I somewhere in the dim and distant past set this somewhere in the depths of the menus?
Ideally this should be set and saved on a per song basis.
(There are a number of settings that I feel would be more useful on a per song basis, but that's for a different discussion.)
Vintage