yeah... it's not deleting the bars it's just setting a new part marker and moving everything down to the next line.

That happens to me sometimes when I insert a part marker by accident when clicking on the measure to add a new chord....

Simply use EDIT > delete insert part marker, and it back up nicely for you.

You can find my music at:
www.herbhartley.com
Add nothing that adds nothing to the music.
You can make excuses or you can make progress but not both.

The magic you are looking for is in the work you are avoiding.