How do I recover the runway?

[Hernan2]

Hi. I purchased several airports from Symflyers a while back. While at the LAX airport I noticed that the AI traffic was taxiing on the grass, with the help of AFCAD I relocated all taxiways, and parking areas and now I can see all AI traffic using the correct gates and using the taxiways, however, while realigning the taxiways I deleted the black line that runs along the runways, because while I was following an AI traffic to the runway, instead of using the taxiway it got into the runway. The links between taxiways were blue, but there was no black line, which I believe is the reason why the AI traffic wonders into the runway. How do I replace the black line?. I checked the "Insert Runway" but it asks for runway lenght, width, heading, etc
Thanks,
Hernan

[emh8]

To replace the black line that runs down the center of the runway, redraw a taxiway link wherever the line is missing and name it according to the runway that it is on.  When you select the drop-down menu of taxiway names, you'll see the runways listed at the bottom.

If you're noticing aircraft wandering onto the runway without holding short, you might check to make sure that hold short nodes are installed on all taxiways leading to the runway.  Hold short nodes are represented by red dots.

Good luck!