Vsd -> Vsdx convertion issue

I use Aspose.Diagram to convert vsd documents to vsdx. In most cases works, but I found a scenario where we get exception.
Here you have a sample app:
VisioTest.zip (135.1 KB)
To reproduce the problem run the app, select a destination folder and press button.
This test app first use standard Visio interop to convert a file (it works of course good).
Next it try to convert the same file by using Aspose.Diagram. We get exception there.
When I tested older version of Aspose, we didn’t get exception but the result of the convertion was incorrect.

If you need more info, please let me know.
Thanks

@mmdevelopment

We have logged an issue as DIAGRAMNET-51947 in our issue management system for your case. We will look into its details and keep you informed with the status of its resolution. Please be patient and give us some time.

We are sorry for the inconvenience.

The issues you have found earlier (filed as DIAGRAMNET-51947) have been fixed in Aspose.Diagram for .NET 20.11.