I’m having issues with shadows being exported incorrectly from Layout. I have a model in Sketchup with scenes created for each elevation (front, right, rear, left). I am using the Solar North tool to adjust the shadows to my liking and saving each scene accordingly. I am relatively familiar with this process, but am picking it back up after a few years of working only in AutoCAD 
I have those scenes in Layout to create a scaled drawing with the elevations. The scenes show up correctly in the Layout application window, however, when exporting to a PNG, the Solar North shadow settings appear to be getting lost in the final .png file. Here’s where it gets interesting:
-If I export one of the problematic individual elevations in a single file on it’s own, it works properly.
-There are some crazy artifacts/shadows that are showing up in addition to the incorrect shadows.
I have tried recreating these scenes a number of times, being careful not to detach the Layout view from the Sketchup view settings, but again, it shows up correctly in the application window, just not in the exported image.
I have attached a screenshot of what is showing in the Layout application window vs. what the exported PNG is ending up with. I’m assuming this is something hardware related, but interested in ideas. I have a relatively capable laptop with 12th gen Core i7, 64 GB ram, and Nvidia RTX A3000 12GB card.
That’s one for @adam. I haven’t seen it that way before.
Have any of the scene properties for the viewports been modified? What rendering method for the viewports?
Can you share the LO file (privately if you prefer) so we can see if exporting with different hardware affects it?
BTW, I really like the appearance of the model in the views on the right.
I have not modified scene properties. Actually recreated the problematic viewports multiple times to hopefully rule that out. Just also went in and created an entirely new layout file and inserted fresh instances of the Sketchup file with the same results. The only thing I modified was the bounding box of the view and scale. Rendering method is raster. I will attempt to share privately.
Thanks for the compliment! I like the appearance of them too! I just need to get that translated to the final export! 
Well, I’m getting the same sort of mess on my end. I’ve tried changing the graphics engine in both LayOut and SketchUp and also tried applying the Shadow Strings fix but that’s not it either. Hopefully Adam will have an idea but in the meantime I would suggest exporting PNGs directly from SketchUp and use those to replace your viewports. Not idea but it should get you by.
This is an export of one of the scenes from the SketchUp model.
Here I did a little reset of the four scenes and then exported png images direct from SketchUp. I sized the images to match the scale of the viewports and this is the resulting PNG exported from LayOut. Does it work for you?
The images could be edited in an image editor to adjust contrast and such.
Thank you for your help, Dave!
My roadblock is really just the scaling of the final PNG. I’m importing these images into AutoCAD as the actual elevations in the construction docs. I think my best option for the time-being is to export single elevations at a time from Layout. That seems to work fine, just slightly more time-consuming. I think trying to get the PNGs scaled correctly coming directly from SU will be a more involved process than I’m willing to get into. I’ll stay tuned to see if Adam has any ideas.
Understood on the scaling thing. I exported the pngs so they are all the same size and then inserted the first one, placed it over your viewport for the same scene and then resized the image to match the viewport. After that I just imported the other images and resize them to match the first image. Hopefully Adam will have something useful for you soon.
This seems related to the issues I am having with LO rendering my scenes in unexpected ways.
The SU/LO team have acknowledged there is a problem. Hopefully they will find a fix for the next update.
Note in my case, exporting to PDF works fine. You might able to do that as well, then if you can not xref the PDF directly into ACAD, you can convert the PDF to a PNG if needed.
I can confirm that exporting to PDF does work as intended on my machine. Unfortunately, converting to PNG won’t be an efficient method as I’m losing significant image quality. I’ll stick to exporting single elevations until a fix is found. Thanks Archy VR!