Hi Support,
Current Aspose.Diagram v.25.11.0 contains issues that break shapes grouping after a simple Open/Save diagram.
I believe this was broken by a fix to the following issue:
Steps to reproduce:
Diagram exam…...vsdx"); var page = document.Pages[0]; var twoDShapes = page.Shapes...package, feel free to share the extracted XML files, and we can help...