Why are lines synchronized?

[Devin]

I have an organization chart with on "master" chart and then synchronized
copies of all the departments on separate tabs within the same document. The
shapes are all sychronized, but the connecting lines are as well. This is
problematic because extra lines appear on the master chart and when I delete
them, the lines are also deleted in the synchronized copy.

Is there a way to avoid this? Or do I just have to draw all the lines in by
hand?

 

[tammyranger]

I seem to be having the same problem. Someone please advise.