In the attached file there is missing some shapes. From what i can deduce from the SVG content, the shapes are actually there, but they seem to have a wrong z-index.
The files are converted with this piece of code:
var d = new Diagram(file);
var SVGso = new SVGSaveOptions();
SVGso.ExportGuideShapes = false;
SVGso.SaveFormat = SaveFileFormat.SVG;
SVGso.SVGFitToViewPort = true;
SVGso.ExportElementAsRectTag = true;
There are three files, office.svg is a svg made through MS Visio, aspose.svg is yours (converted with 19.3), and a source.vsd file.
shape order.zip (371.8 KB)