Hello all you knowledgable and helpful people.

I've built a track and entered chords , added soloists, keyboard and other instruments and now I find I want to insert 4 bars into the middle which essentially are intended to copy the previous 4 bars.
However, when I insert the bars (copied from the previous 4)they are ignored when playing.
The cursor highlight follows them but what plays is not JUST the inserted bars ,it sounds like they're ON TOP
of the following section which I'd assumed would move down. I'm sure this worked the way I'd intended in other projects.
What am I missing here?

win10, BIAB2021