Thank you for contacting support. We’re sorry to share with you that we could not find a source VSDX diagram in your attached zip. Please recheck and attach a source VSDX diagram to your reply. We’ll start investigating it and share our findings with you once the source VSDX file is available to us.
We have tested your sample Visio diagram against the latest build of Aspose.Diagram for Java 5.8.0 and managed to replicate the problem of missing shapes. We have logged this problem under ticket id DIAGRAMJAVA-50262 in our issue tracking system. Your post has also been linked to this issue. We’ll keep you informed regarding any available updates. We’re sorry for the inconvenience caused.
Thank you for being patient. We have a good news for you that the issue id DIAGRAMJAVA-50262 has now been resolved. If there is no issue in the QA phase, then this fix will be included in the next version of Aspose.Diagram for Java 5.9.0. We’ll inform you via this forum thread as soon as the new release is published.