We have the .vsd file attached to this post which contains 2 pages. When we open this with Aspose.Diagram and then save this as .vdx, the first page is lost when we open it again in Visio (2013).
It appears the Background property of the page is set on this page by Aspose.Diagram, and background pages are not shown in Visio.
I tested this with the latest Aspose.Diagram (5.5.0).
This was not a problem in the previous version we used (4.1.0)
Can you reproduce and solve this issue?