Losing crops on sections viewports and detail viewports during DWG exports

[jmcewen]

Is there any way to avoid losing crops on section viewports and detail viewports when exporting to DWG? the black rectangle below is my page and the highlight extending off to the left is  a section viewport  that grew from being about 1/4 of an ARCH D sheet to being around 200' long.  I have this happening in several places, but it seems inconsistent.  it doesn't happen to every section, but every detail viewport seems to show the entire source viewport all over again, covering other information in the page. Sometimes the exported viewport only shows the intersection of objects with the cutting plane and nothing else, even though the VWX shows everything I want.

 

I think these errors may also be causing me difficulty with uploading the DWG to BIM as well, though i may have something else causing me trouble.  the two problems just arose simultaneously so i am guessing that they are related.  The upload succeeds but the file fails to process and become viewable.

 

[jmcewen]

A few clarifications.  The inconsistency in how this happens is what leads me to believe there must be a solution to it, but I feel like I have treated most of the instances of my sections in the same way.  Several of the sections are of nearly identical objects.  See them posted below.  Some only lose the crop object that I added to the section viewport for the purposes of editorial formatting and fitting the page.  Others extend the cutting plane as shown  in the previous post.  My file is  protected under an NDA, so I have covered some identifying information and I don't know if I  can share enough of the file itself to show the problem and have anyone explore it without violating  the agreement. I will post a couple screenshots in an attempt to share info without sharing enough to identify anything  that would constitute a breach.

 

This instance only loses the crop object (the rounded rectangle is the crop-- still visible, but no longer cropping.)  The reimport of the dwg shows three separate 2d symbols: one of the colored section visible at the cutting plane as the background render, one showing the profiles of the colored sections,  and one of the hidden line foreground render.  However these are all fairly contained, just barely leaking outside of the crop object.  There are also 3 separate instances of the crop object.  I could deal with this-- I can just adjust my cutting line to only be as long as  the space i have for the crop.  it jumbles up the drawing a bit, but I could make it work.

 

and here are the relevant section settings

Contrast that with these sections of substantially similar materials drawn the same way with the same settings as far as I can tell  and you can see each has a significant portion extending to the left of the screen for a total of 257' feet off the edge of the page showing a sliver of every object in the path beyond the cut plane.

And the relevant settings-- the only difference I note is that the advanced properties on this version show the extents beyond cut plane greyed out (though extents beyond cut plane is turned on in the OIP.)  I don't know why it is greyed out in this example.

 

Edited October 16 by jmcewen