There is an option in stylepicker, press action - options and then deselect “always change tempo to style tempo”
See page 146 of the manual https://nn.pgmusic.com/pgfiles/support/misc/manual/bandinabox_win_2021_manual.pdf

Let us know if you’ve deselected that function, and it is still misbehavin’.


Have Fun!
Peter Gannon
PG Music Inc.