Civil 3D 2019 Profile Line Appears Broken or "Gapped"

[jeffinitely]

Hello,

I've got a C3D 2019 drawing with a data shortcut EG surface.  I've created an alignment and a profile at centerline, as well as -1' and +1' offset profiles with different view styles.  Sounds simple right?  Well at first, each profile line is displayed correctly per our style within the profile view - red/yellow dotted lines for left and right profiles extending the view's entire length - but then after a few minutes, the offset profile changes and displays as having huge gaps within the profile line (see screen shot). 

My surface more than extends past the limits of the offset profiles on all sides.  Strangely, I found that adding an alignment vertice in a random spot along the alignment temporarily makes the profiles show correctly, but then suddenly there are gaps again.

In the same drawing, I've created a second profile using the same alignment and profile criterion and the same thing happens in the same exact stations in both of the profiles.  I queried the station and offsets of the beginning/ends to the gaps in the profiles and found that they almost perfectly correspond with vertices in the alignment linework.  I created the alignment from a polyline, and even tried re-creating the alignment.  No change in the profiles.

In addition, I rebuilt this entire drawing from scratch and the same thing happens.  I even redrew the alignment polyline but nothing fixes this problem.  Purge/Audit/-PU yields nothing.  I checked the surface in its base drawing and deleted the data shortcut, then recreated it, re-pathed, synchronized, you get the drift... nothing helped. This same problem is occurring on numerous computers in my office.

All of my Civil 3D updates are installed.  We use Windows 10 Pro 64-bit with all updates installed.  I often use Ccleaner to fix my registry and keep my drive clean.

Any suggestions would be greatly appreciated.

All Best,

Jeff S

CADD Manager

Wilson Engineering, LLC

[cwr-pae]

With out the cad file to look at I can only guess that your surface has a gap/hole in it. To check you can go to the surface style and turn on the elevations under analysis, this will color the surface and any blanks (background color) will be a hole.

[jeffinitely]

Hello CWR... thanks for the reply.

Under normal circumstances, I would post the dwg file; However, it has data shortcuts and an XREF of our base drawing in it and probably won't come across the same.  I've used data shortcuts for surfaces hundreds of times without incident- never seen this problem until now (2019).  In addition, importing the surface directly into this drawing and using it to cut the profiles fixes the problem, but I need data shortcuts to work flawlessly every time.

I searched Google for this problem and found nothing in comparison which leads me to believe that it could be a newer problem.

I did check for surface gaps using Object Viewer but none exist.

Thanks again!

All Best,

Jeff S