This seems to be an issue specifically with this half-time style _BGBAND8. One solution I found is this (save a copy of your song beforehand.

1. Edit | Song Form | Reduce duration of Chords by 1/2
2. Song Settings --> uncheck "Allow Half-time..".
3. Reduce tempo by 1/2

This will sound exactly the same as it does now, though visually the chords and notation will be compressed as a 16th based song.

Andrew
PG Music Inc.