Assembly drawing view few of the component edge lines aren't coming properly

I am using Creo Direct 4.0 M1300

in Assembly drawing view few of the component edge lines arent coming properly. view shows broken lines of sub-components.
I tried to bring those lines visible by changing the view display style in the drawing but no luck with any of the options. I couldn't able to find any other solution to this issue. Kind request to take this on priority and provide the solution.