PowerPoint Couldn't Read Some Content after Loading and Saving PPTX file in C#

After loading a powerpoint slideshow containing a 3d object and saving back the file, Powerpoint will come with an warining to the user regarding ‘removed content’.
image.png (5.0 KB)

There were no warning when both loading and saving the file. Sample code used to reproduce:

Aspose.Slides.Presentation doc = new Aspose.Slides.Presentation(input);
doc.Save(output, Aspose.Slides.Export.SaveFormat.Pptx);

This was tested using the Aspose.Slides 21.12 for .Net
Sample files:
output.zip (2.1 MB)

Thank you for the issue description.

I’ve reproduced the problem with saving the presentation and added a ticket with ID SLIDESNET-42987 in our issue tracking system. Our development team will investigate this case. You will be notified when the issue is resolved.

The issues you have found earlier (filed as SLIDESNET-42987) have been fixed in Aspose.Slides for .NET 22.3 (ZIP, MSI).
You can check all fixes on the Release Notes page.
You can also find the latest version of our library on the Product Download page.