You can choose how to display crossing routes in a diagram view.
Before you begin: In Me > Preferences > App Preferences > 3D Modeling> Systems Architecture > Functional and Systems Design > Diagram View, set the convenient options in Crossing Lines in Diagram View.
From the Layout section of the action bar, click Apply Gap on Routes .
The display you have selected
is applied every time a route crosses another one. In this scenario, the Gap option is selected and the horizontal routes have the priority over the vertical ones.
Click Remove Gap on Routes .
The Apply Gap on Routes command is deactivated and the gaps are removed.