what's the purpose of

<Points>
<Point>50, 30</Point>
<Point>50, 75</Point>
</Points>

How I can know the values i.e 50, 30, etc?

As per your previous comment I have added POINTS tag and mentioned dummy values in that because after that i am applying Flowchart Layout.

Also ID started from 1 to onward, please check attached file, still I am not able load XML.

when I m loading XML first time its displaying diagram properly, But in case of loading 2nd time following exception occurs
"Cannot remove the specified item because it was not found in the specified Collection."

Code:
DiagramView1.Diagram =new Diagram() ;
        DiagramView1.LoadFromXml(Server.MapPath(@"~\Users\s2tadmin\FlowCharts\Output\XML
\BusinessRuleXML\Diagrams\") + sFileName);

        MindFusion.Diagramming.Layout.FlowchartLayout ll = new MindFusion.Diagramming.Layout.FlowchartLayout();
        ll.Orientation = MindFusion.Diagramming.Layout.Orientation.Vertical;

        ll.Arrange(DiagramView1.Diagram);
        DiagramView1.Diagram.ResizeToFitItems(5);

I want to apply color to rectangle, can u tell me which tag I have to add in XML.

I have below tag In xml but where I can use Index i.e 100
<Brushes>
<Brush Index="100" Type="Solid">
<Color>#FF87CEFA</Color>
</Brush>
<Brushes>

Please mention proper eg with its xml so that I can understand easily.

Its displaying all nodes in black color.

I am applying Flowchart layout, In that case some lines are intersecting nodes so did this Issue fixed in your paid version or not?

Or if you have released your latest version for decision layout, I will use that, if its fixed in this version.

I am going to attach screen shot with its XML file please check and let me know.

If are nested properly In some flowcharts this type of intersecting problems are occurred.
Is there any way to solve this or you can customize your product then we will decide to buy.